The Radio Shop
The Radio Shop
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  • Просмотров 2 985 269
Yaesu FT 101 EE Station and Repair Part 1
I bought another Yaesu FT-101 Station. Let's see if we can troubleshoot the problem and get this up and going.
Support The Radio Shop on Patreon;
www.patreon.com/theradioshop
Follow mw on lbry.TV:
lbry.tv/@TheRadioShop:2?page=1
Contact Information;
gokarters.com/smf/index.php?topic=2549.0
Discuss this on my website;
www.gokarters.com/smf
Due to time restraints I am not accepting incoming repairs at this time.
For donations, cards, letters, mail time items, and gifts:
The Radio Shop
2344 April lane
Greenville NC. 27834
kc4umo@gmail.com
Просмотров: 3 091

Видео

Mustool MDS M Pro & FNIRSI DSO Review and Give a Way 0
Просмотров 1,3 тыс.21 день назад
Check the links below to purchase these scopes from Banggood: www.banggood.com/Mustool-MDS120MPro-120MHz-500MS-or-s-Digital-Oscilloscope-3MHz-Signal-Sources-2-in-1-Automotive-3-Types-Signal-Sources-Output-p-2008966.html?imageAb=2&cur_warehouse=CN&akmClientCountry=CN&ID=6325861&p=7X100112145660201707&custlinkid=4053627 Code:BG174f84 Code price:$58.94 Exp:6/30 www.banggood.com/FNIRSI-DSO153-2in1-...
Midland 13-976 "Will It Work ?"
Просмотров 2,8 тыс.Месяц назад
Lets see if this old CB from 1976 will work. Support The Radio Shop on Patreon; www.patreon.com/theradioshop Follow mw on lbry.TV: lbry.tv/@TheRadioShop:2?page=1 Contact Information; gokarters.com/smf/index.php?topic=2549.0 Discuss this on my website; www.gokarters.com/smf Due to time restraints I am not accepting incoming repairs at this time. For donations, cards, letters, mail time items, an...
Kaiweets KTI W01 Thermal Camera Review
Просмотров 775Месяц назад
Lets use the Kaiweets KTI-W01 to repair this Commodore 64 10% off code: T6R8R7B6 $50 coupon: Apply on product page (Save 10% plus $50 in total) Date of expiry: 2024-6-30 Buy from Amazon: www.amazon.com/dp/B0CB7Q6J79 15% off code: TRS15 (Available sitewide at Kaiweets.com and it never expires.) Buy from official store: kaiweets.com/products/kti-w01-handheld-thermal-camera Support The Radio Shop ...
HP 608C Will it Work
Просмотров 2,7 тыс.3 месяца назад
I grabbed a random generator from the stack, let's see if this thing will work. Support The Radio Shop on Patreon; www.patreon.com/theradioshop Follow mw on lbry.TV: lbry.tv/@TheRadioShop:2?page=1 Contact Information; gokarters.com/smf/index.php?topic=2549.0 Discuss this on my website; www.gokarters.com/smf Due to time restraints I am not accepting incoming repairs at this time. For donations, ...
Pile of vintage HP gear
Просмотров 2,7 тыс.3 месяца назад
Some vintage HP stuff that was donated to the shop. Also PC upgrades. Buddy's Work Shop ruclips.net/channel/UCJVgTAQoe6O34p6GN1TCV4A Support The Radio Shop on Patreon; www.patreon.com/theradioshop Follow mw on lbry.TV: lbry.tv/@TheRadioShop:2?page=1 Contact Information; gokarters.com/smf/index.php?topic=2549.0 Discuss this on my website; www.gokarters.com/smf Due to time restraints I am not acc...
CZUR ET24 Pro Scanner Review
Просмотров 1,4 тыс.4 месяца назад
Professional book scanner ET24 Pro supports OCR function and HDMI; compatible with Windows, macOS, and LINUX. You can get it at CZUR's store: shop.czur.com/products/etscanner?variant=40313243762736& ET24 Pro features: * Patented Curve Flattening Technology * High-Speed Scanning * No Reflections * Creates searchable PDFs and editable Word and Excel files for a lifetime free. Recognizes more than...
Kenwood TS940 Part 2 Troubleshooting
Просмотров 2,5 тыс.4 месяца назад
Just a few test on the TS-940 to see if the new PA board works. Support The Radio Shop on Patreon; www.patreon.com/theradioshop Follow mw on lbry.TV: lbry.tv/@TheRadioShop:2?page=1 Contact Information; gokarters.com/smf/index.php?topic=2549.0 Discuss this on my website; www.gokarters.com/smf Due to time restraints I am not accepting incoming repairs at this time. For donations, cards, letters, ...
Testing New Setup
Просмотров 2,2 тыс.4 месяца назад
Testing out the new setup in OBS Studio. Buddy's Work Shop ruclips.net/channel/UCJVgTAQoe6O34p6GN1TCV4A Support The Radio Shop on Patreon; www.patreon.com/theradioshop Follow mw on lbry.TV: lbry.tv/@TheRadioShop:2?page=1 Contact Information; gokarters.com/smf/index.php?topic=2549.0 Discuss this on my website; www.gokarters.com/smf Due to time restraints I am not accepting incoming repairs at th...
Retekess TR111 Review & TR112 Winner
Просмотров 2 тыс.4 месяца назад
Lets look at the Retekess TR111 radio from Retekess. Winner announcement for the TR112. Retekess TR111 www.amazon.com/dp/B0CCHZY3NM Buddy's Work Shop ruclips.net/channel/UCJVgTAQoe6O34p6GN1TCV4A Support The Radio Shop on Patreon; www.patreon.com/theradioshop Follow mw on lbry.TV: lbry.tv/@TheRadioShop:2?page=1 Contact Information; gokarters.com/smf/index.php?topic=2549.0 Discuss this on my webs...
Trip Down Memory Lane
Просмотров 1,7 тыс.6 месяцев назад
Just a look at some old radios I used for satellite communications years ago. Was going to upload on Christmas eve but I quickly came down with a stomach bug and have had no energy to do anything since. Support The Radio Shop on Patreon; www.patreon.com/theradioshop Follow mw on lbry.TV: lbry.tv/@TheRadioShop:2?page=1 Contact Information; gokarters.com/smf/index.php?topic=2549.0 Discuss this on...
Mail Time December 2023
Просмотров 2,1 тыс.6 месяцев назад
Been sometime since we had a mail time video, lets see what I got. Buddy's Work Shop ruclips.net/channel/UCJVgTAQoe6O34p6GN1TCV4A Support The Radio Shop on Patreon; www.patreon.com/theradioshop Follow mw on lbry.TV: lbry.tv/@TheRadioShop:2?page=1 Contact Information; gokarters.com/smf/index.php?topic=2549.0 Discuss this on my website; www.gokarters.com/smf Due to time restraints I am not accept...
Lets look inside the Retekess TR112 Receiver Give A Way
Просмотров 2,8 тыс.7 месяцев назад
Retekess TR112: www.amazon.com/dp/B0CCDK2JPD Buddy's Work Shop ruclips.net/channel/UCJVgTAQoe6O34p6GN1TCV4A Support The Radio Shop on Patreon; www.patreon.com/theradioshop Follow mw on lbry.TV: lbry.tv/@TheRadioShop:2?page=1 Contact Information; gokarters.com/smf/index.php?topic=2549.0 Discuss this on my website; www.gokarters.com/smf Due to time restraints I am not accepting incoming repairs a...
Flapping in the Yard
Просмотров 1,8 тыс.8 месяцев назад
Just talking about what I have been doing and things to come. Buddy's Work Shop ruclips.net/channel/UCJVgTAQoe6O34p6GN1TCV4A Support The Radio Shop on Patreon; www.patreon.com/theradioshop Follow mw on lbry.TV: lbry.tv/@TheRadioShop:2?page=1 Contact Information; gokarters.com/smf/index.php?topic=2549.0 Discuss this on my website; www.gokarters.com/smf Due to time restraints I am not accepting i...
Kaisi TX 350e Microscope Review
Просмотров 2,8 тыс.8 месяцев назад
Kaisi TX-350E Professional Soldering Microscope,Trinocular Stereo Microscope: www.amazon.com/dp/B0CB6C6CVV Buddy's Work Shop ruclips.net/channel/UCJVgTAQoe6O34p6GN1TCV4A Support The Radio Shop on Patreon; www.patreon.com/theradioshop Follow mw on lbry.TV: lbry.tv/@TheRadioShop:2?page=1 Contact Information; gokarters.com/smf/index.php?topic=2549.0 Discuss this on my website; www.gokarters.com/sm...
Kenwood TS 940 PA Upgrade Part 1
Просмотров 6 тыс.9 месяцев назад
Kenwood TS 940 PA Upgrade Part 1
Retevis RT 5R 2 Way Radio Review
Просмотров 2,5 тыс.11 месяцев назад
Retevis RT 5R 2 Way Radio Review
Projects in the shop
Просмотров 2,4 тыс.11 месяцев назад
Projects in the shop
FT 101 Front End Alignment
Просмотров 8 тыс.11 месяцев назад
FT 101 Front End Alignment
Will it Work ? Tram Titan IV
Просмотров 2,9 тыс.11 месяцев назад
Will it Work ? Tram Titan IV
YC 601 repair -Viewer mail -Tesman give a way
Просмотров 2,9 тыс.Год назад
YC 601 repair -Viewer mail -Tesman give a way
Elikliv EDM602 LCD Digital Microscope
Просмотров 3,6 тыс.Год назад
Elikliv EDM602 LCD Digital Microscope
Second Look at the FT 101 Early
Просмотров 3,4 тыс.Год назад
Second Look at the FT 101 Early
FT101 Early Will it Work
Просмотров 9 тыс.Год назад
FT101 Early Will it Work
Saturday in the shop
Просмотров 6 тыс.Год назад
Saturday in the shop
Tesmen TM-510 review and giveaway
Просмотров 2 тыс.Год назад
Tesmen TM-510 review and giveaway
Random Radio From The Vault, Will it Work ? Smoke Alert
Просмотров 6 тыс.Год назад
Random Radio From The Vault, Will it Work ? Smoke Alert
#289 B&K 1801 FC Repair
Просмотров 3,9 тыс.Год назад
#289 B&K 1801 FC Repair
End Of Year at The Radio Shop 2022
Просмотров 1,3 тыс.Год назад
End Of Year at The Radio Shop 2022
Christmas Eve at The Radio Shop
Просмотров 2,4 тыс.Год назад
Christmas Eve at The Radio Shop

Комментарии

  • @stevepatterson2290
    @stevepatterson2290 День назад

    awesome video

  • @geraldrapp8339
    @geraldrapp8339 День назад

    Thank you nice job . 73 28:41

  • @doughendry115
    @doughendry115 День назад

    Nice look little scope that would very handy especially when you have small area to work in

  • @rogerhowell9474
    @rogerhowell9474 День назад

    As always your videos are great. I could really use the pro scope. My old Tektronix 2213a has almost completely died. The trace function went out and I'm down to guessing at the calibration. Take care everyone and have a safe 4th of July.

  • @rustylozanolpc4227
    @rustylozanolpc4227 2 дня назад

    I literally took mine apart as you did and followed your guidance step by step. This sort of video is very handy to use as a guide. I’d love to watch you recap the capacitors and see how you do it.

  • @richardmiranda5357
    @richardmiranda5357 3 дня назад

    Hi Radio Shop guy. I hope you had the chance to fix this monster. Just some tips to you. This thing is from the 60's. Means all switching is mechanical, using relays etc. I would recommend to clean up carefully every single relay is on there. In the power supply there are some, in the RF lines and in the display unit are like 10 of them. Several years of inactivity and inadequate storage are causing corrosion in contacts. It's just the first thing I always do to vintage electronics.

  • @stevepatterson2290
    @stevepatterson2290 3 дня назад

    question do you have to neaturize the tubs when they are replaced?

  • @robincrawling8125
    @robincrawling8125 3 дня назад

    They're about 39 years old have one and still use it, great radio

  • @hamradiohack
    @hamradiohack 3 дня назад

    I have 3 or 4. A early serial 101 no letter that is the best working one ive seen. Ive got a 101b but letters are flaking off. A 101e missing 10m xtals. A 101e with some weird demodulator mixer board. I have a original silver trim 101fv no B letter vfo. Probably pretty rare as ive never seen one ever before. Have the yo100 but cant figure out why theres voltage on the chasis. The yc601 in your video looks odd like a inbetween version...love these but i prefer the ft901dm or 101zd or ft102 for tube hybrids. This station looks super clean

  • @BobHoffmannBHMY
    @BobHoffmannBHMY 4 дня назад

    Thanks for this informative video about the Sencore CB42 CB Analyzer. The concept at the time was to provide the servicing technician of a CB radio to hook up the essential cables to the product, and then conduct troubleshooting tests from the RF input to the power transmitter output to the antenna, with some twists of the appropriate dials. Such was called a "systems approach" for troubleshooting for finding the problem fast, rather than the parameter measurement techniques of Tektronix and Hewlett-Packard instruments of the time. I wrote the operations and some of the maintenance portions of the CB42 manual.

  • @GarthWheeler
    @GarthWheeler 4 дня назад

    The carrier board

  • @mikefinn2101
    @mikefinn2101 5 дней назад

    You did it again splurged i know the temptation as I am guilty just have to watch out for the wife she thinks i am obsessed. Great video

  • @george-ev1dq
    @george-ev1dq 5 дней назад

    Excellent video, Thanks for your wealth of knowledge and experience on these older sets.

  • @george-ev1dq
    @george-ev1dq 5 дней назад

    Damn, that gear is totally mint, credit to the owner

  • @1903A3shooter
    @1903A3shooter 5 дней назад

    GREAT BUDDY, that was fun, Great looking rig. Dave W4GSM

  • @MD0MDI
    @MD0MDI 5 дней назад

    Beautiful, Very envious, I collected a 101ZD Mark 3 in Mint Condition, Sadly no Scope which is on my Wish List. I do not normally post as you are obviously busy, but I do love your posts, Great Work Man. 73

    • @TheRadioShop
      @TheRadioShop 5 дней назад

      Thanks for stopping in and posting. Good luck on your scope hunt

  • @ukrainehamradio
    @ukrainehamradio 5 дней назад

    Excellent device! Unfortunately, many people do not understand that any vintage device needs maintenance before turning it on and using it.

    • @george-ev1dq
      @george-ev1dq 5 дней назад

      Yep, anything that age needs new cans

    • @TheRadioShop
      @TheRadioShop 5 дней назад

      One reason why I do these videos is the share

  • @stingray408
    @stingray408 5 дней назад

    GREAT RADIO AND VIDEO THANKS FOR SHARING--@@!!!!

  • @droberts73543
    @droberts73543 5 дней назад

    Love the 101EE that was my first radio I bought one that needs a lot of work eventually get it done but will be referring to your 101 videos to make sure I don't miss anything :)

  • @martinkoskella3943
    @martinkoskella3943 5 дней назад

    The MDS M Pro works better than I expected for this price range, great review. Please add me to the give away list.

  • @vhfgamer
    @vhfgamer 6 дней назад

    "Unless you're a technician, I don't suggest just plugging it in and turning it on." Amen.

    • @george-ev1dq
      @george-ev1dq 5 дней назад

      get the variator out for sure.

    • @Drekkag
      @Drekkag 4 дня назад

      @@george-ev1dq i think you mean variac

  • @rohnkd4hct260
    @rohnkd4hct260 6 дней назад

    Pretty radio! Great job, looking forward to the next video.

  • @lrspahn1974
    @lrspahn1974 6 дней назад

    I have an ALC/IC/PO switch from a 101

    • @TheRadioShop
      @TheRadioShop 6 дней назад

      I recently had to go on eBay to purchase one of those.

    • @lrspahn1974
      @lrspahn1974 6 дней назад

      Im sending you one also...plus a few parts​@@TheRadioShop

    • @TheRadioShop
      @TheRadioShop 5 дней назад

      @@lrspahn1974 Thanks, if you need my contact, it can be found in the description box.

  • @ukm6yik69
    @ukm6yik69 6 дней назад

    I love old radios much better than the stuff nowadays

    • @TheRadioShop
      @TheRadioShop 6 дней назад

      I am with you on that.

    • @george-ev1dq
      @george-ev1dq 5 дней назад

      Big and chunky, easy to use unlike todays sets which are wonderful but too small to be useable with their tiny little switches and multi function buttons. My favourite receiver is the old Sanyo RP8880 from 1978, so easy to use , read and understand.

  • @lylewatts6370
    @lylewatts6370 6 дней назад

    Yes I have the same set up here and worked on the FT-101E. Took me a while to get all the accessories but was worth it. Love the radio and should use it more than i do. To many transceivers and a little radio shack makes for not easy access to them. Thanks for sharing and will be following the next FT-101 videos.

    • @TheRadioShop
      @TheRadioShop 6 дней назад

      Thanks for sharing. I know what you mean. I have very little room and need to expand.

  • @cadiscase
    @cadiscase 6 дней назад

    Have you ever worked on a Yaesu FT-107M ? I heard they are a troublesome radio. Is the FT-107M poorly designed or were inferior parts used ? Thanks

    • @TheRadioShop
      @TheRadioShop 6 дней назад

      These are known for problematic memory functions. Also bad solder joints. Other than that not too bad.

  • @PapasDino
    @PapasDino 6 дней назад

    That's a keeper for sure Buddy! I've always wondered about why Yaesu put that plastic cover over the front panel...seen so many of them that have looked terrible as it ages on rigs that were well used. What was the "brown wire" syndrome? Hadn't heard that one before. 73 - Dino KLØS

    • @TheRadioShop
      @TheRadioShop 6 дней назад

      Hey Dino, I agree. The plastic really keeps the front of the rig looking good after 40 plus years. Brown wire? We dont need no stinking brown wire 10-4. :)

  • @BadSector
    @BadSector 6 дней назад

    another great video, thank you good sir

  • @jrumiano
    @jrumiano 6 дней назад

    I remember the first time I saw an FT-101 (around 1975). They are still cool radios. Nice clean example there!

  • @alpcns
    @alpcns 6 дней назад

    Congratulations Buddy on such a beautiful addition. Very nice radio and great video.

    • @TheRadioShop
      @TheRadioShop 6 дней назад

      Thank you very much my friend.

  • @alandrury9955
    @alandrury9955 6 дней назад

    Wow, what a great find. Looking forward to seeing the rest of the project

  • @Homer19521
    @Homer19521 6 дней назад

    Maybe you can talk about "split" caps on your next vid. I haven't seen much discussion on those. My Tempo 1 has a bunch (I think 0.01uF 50v striped film style) , but I can't tell if they are a problem as the Radio works fine. 👍

    • @TheRadioShop
      @TheRadioShop 6 дней назад

      I did mention that in some of my older 101 videos. What happens is moister gets into those caps and they start splitting apart. Can be issues later down the road.

  • @nicksmit489
    @nicksmit489 6 дней назад

    Good day sir, thanks for this video. I am just starting to get involved in doing electronic radio repair and has already learned a lot from you only on this video. I am making notes as far as I watch and listen to videos and this one is extremely informative and easy to follow. Thanks again from Nick in South Africa.

    • @TheRadioShop
      @TheRadioShop 6 дней назад

      Thanks Nick, and good luck on your studies of radio electronics.

  • @jimhall9360
    @jimhall9360 6 дней назад

    I'm thankful you were àble to get this equipment. I'm sure you appreciate the treasure it is to have one in such immaculate condition!

  • @boxingday11
    @boxingday11 6 дней назад

    Thanks Buddy, great upload.👍

  • @TheArtofEngineering
    @TheArtofEngineering 6 дней назад

    Could I just say these videos are gold kind sir! They will ensure these rigs stay alive so thanks MIGHTILY 73 de VK2AOE....I aspire to own an FT101 ...one day??

    • @TheRadioShop
      @TheRadioShop 6 дней назад

      Thanks for the kind words. There are lots of them out there. Hope you fins one.

  • @bblod4896
    @bblod4896 6 дней назад

    That was a Ham who took care of his equipment. 😊 The symptoms you gave: warm transformer and noise in RX did point to a power supply rail issue. Another way to confirm would have been connecting to an external DC supply, watching the current draw and see if noise disappeared. Yes, I would replace all the electrolyte capacitors. Looking forward to the next episode. Have a great week Buddy.

    • @TheRadioShop
      @TheRadioShop 6 дней назад

      Correct you are. The DC power supply is a good way to tell what is going on.

  • @stewartthompson72
    @stewartthompson72 6 дней назад

    What an incredibly clean and nice station.

  • @2packs4sure
    @2packs4sure 6 дней назад

    How the heck could that guy run that thing for a quarter century and have it be that clean ?? If I set that thing in my house and turned it on for an hour it wouldn't be that clean... lol

    • @TheRadioShop
      @TheRadioShop 6 дней назад

      Thats a good question I like to know. His house must be a clean room as this radio does not show any signs of normal wear.

    • @2packs4sure
      @2packs4sure 6 дней назад

      @@TheRadioShop Yeah,, it's not natural.. :)

  • @rustylozanolpc4227
    @rustylozanolpc4227 6 дней назад

    I’m taking this alllll in! Thank you !

  • @DonDegidio
    @DonDegidio 6 дней назад

    Hi Buddy, Nice video. The previous owner knew how to take care of his equipment. Good to know that when I recap my FT-901DM, I do not need a retune. Stay safe. 73 WJ3U

    • @TheRadioShop
      @TheRadioShop 6 дней назад

      Yes he did. Never seen one this clean.

  • @IMSAIGuy
    @IMSAIGuy 6 дней назад

    wow, you will never find one that nice again.

    • @TheRadioShop
      @TheRadioShop 6 дней назад

      This is very true. I never seen a used radio look so good. Nice to see you stop by.

  • @bmh67wa
    @bmh67wa 6 дней назад

    I just need the phone patch to have the same setup but mine isn't nearly as nice looking. It was once owned by a CBer who smoked both cigarettes and cigars like a chimney. It took forever to get all of the sticky brown film off of everything but it all works well.

    • @TheRadioShop
      @TheRadioShop 6 дней назад

      That stuff can be tough. But I found that sometimes it helps preserve the paint. If you need to repaint I found that Rustoleum satin granite for the case and Krylon pewter grey for the trim is a close match.

  • @rustylozanolpc4227
    @rustylozanolpc4227 6 дней назад

    I learned so much !! Thank you! What kind of antenna are you using ?

    • @TheRadioShop
      @TheRadioShop 6 дней назад

      Thanks. I am using a homemade multi band dipole with the apex at 50 foot, cover 10 through 160

  • @cuban9splat
    @cuban9splat 6 дней назад

    Excellent video. I wish I still had my old 101-EE. Thanks for sharing it with us Buddy. 73 de K7RMJ Frank.

    • @TheRadioShop
      @TheRadioShop 6 дней назад

      Thanks Frank, I going to love this one

  • @w.rustylane5650
    @w.rustylane5650 6 дней назад

    Wow, Buddy! What a station! And you got a good deal to boot. That's the prettiest Yaesu set up I've ever seen. I love my Yaesy 991a so much I spent another $100.00 and got rails to protect the front end. I can't believe you troubleshooting the radio and never even turn it on. Sounds great. Cheers & 73 from K9POW in eastern TN

    • @TheRadioShop
      @TheRadioShop 6 дней назад

      Thanks, It is a nice unit. The thing is the previous owner gave enough detail to lead us to the problem. Plus knowing a little about the radio circuit helps.

  • @RGB06084
    @RGB06084 7 дней назад

    Hey Buddy! Hope you're doing welll!

    • @TheRadioShop
      @TheRadioShop 6 дней назад

      Not to bad, normal aches and pains, Hope you are good.

  • @davidberry7985
    @davidberry7985 7 дней назад

    Nice to see a great little transceiver up and working again. Alway very nice to learn something from someone that knows exactly how to trouble shoot faulty circuts. Thank you for the very nice video

  • @bachkhoa1975
    @bachkhoa1975 7 дней назад

    Again, thanks for sharing. Although you showed that the new RF PA board works in delivering 100 watts in FM mode, I’d be interested in its performance in a SSB mode. Specifically, I want to know how much out of band emissions it causes when tested with a two-tone test (for example, 900 Hz and 1300 Hz sine wave audio input, with output at 100 watts). Any non-linearity of the amplifier would show up in this test. Excessive emission would bleed into nearby frequencies and potentially cause interference.

  • @bachkhoa1975
    @bachkhoa1975 7 дней назад

    I watch your video with a lot of interest. Thank you for doing it. I recently acquired a TS940SAT which has a broken RF Final unit; I’m trying to figure out how to go about fixing it. Since the new PA board is elevated by the new, additional copper heatsink, washers or stand-offs need to be used at its 4 corners and 4 additional mounting holes else the board might be bent if the screws are over-tightened. At minute 24’, the thermistor wires are cut and there’s no longer a thermistor hooked up to the fan control circuit (IC1 and Q7, Q8 on the LPF unit board), I suspect the cooling fan is permanently disabled.