#129 

You, Sir, are a Wizard. Truly enjoy watching you work. and wave your magic wand.

I know this is old but excellent catch, and thank you for taking the time to post stuff like this. I learn from you

Love the way you show and teach . Thanks so much .

Thank you for opening up that relay so we can see how it works. I have always known the theory behind its operation, but I have never seen it in action, or what the mechanism actually looks like. Thank you so much, 73, kg2ix

Nice work!!!

Buddy I love it when you work on Kenwoods. Always great to learn something new Thank You

Great video again! Love your trouble shooting and repair videos especially of HF radios. Keep them coming please! Also love your calm and relaxing manner and your wonderful accent. It's great to see you methodical diagnosing and fixing problems. Dr. Stan KZ8G

I always find your videos amazing. A great many should aspire to have your abilities!

Another great fix, don't know what specialized training you had or schooling but you do a fine job with a lot of patients and steady hands. Keep up the good work and thanks for sharing these videos!! I really enjoy watching you troubleshoot and fix these projects.

VERY GOOD INDEED! This was VERY EDUCATIONAL. A Great Live as it happens approach to a real problem. I particularly was glad to see the "EQUIPMENT" both Large and Small that you are using to work on this Printed Circuit Board with ( the Tweezer Set ) for example and the Type of Soldering / De Soldering Equipment. Proper Knowledge and Proper Equipment a bit of Luck thrown in and you have what everybody wants " SUCCESS" . I will certainly be watching your other Videos.

As you stated before you started on a 520 as I also did and still have a few. I also have a TS940s will bring back out someday. Great vid Thank You

Nice walk through Buddy. Thanks for sharing 73

It was a great help for me, many thanks TI2YO

U gotta love it when a plan comes together.

Nice work,I love listening to your Troubleshooting Skills.. Gives me a good flashback to my days,but on Ham Radio Transceivers rather than Commercial (other stuff) Equipment. Very detailed,more than anything else I've found on the Gear I now have at my 67yr old age. N7PB Paul Bates

This is an outstanding series. I just wish I had your background and experience to track down the problems as you have - without complete;y decimating the radio as a part of the process. Keep 'em coming!

Grate repair buddy as always big thumbs up

Good work sir ,73's from europe Greece

Nice repair!

Very helpful . Thanks

good job buddy. lucky for uncle he had the bulb on the input lead.

Good video. You are correct about doing a good visual inspection first, it could lead you in the right direction.

Very nice video, enjoyed watching you work.

Good job mate. This model is a beast to have to work on.

great video i have the kenwood TS- 940s

Nice fix, Buddy. I have two 940s, so I always like to see repair videos of that radio. 73...Dan w4mnc

Enjoyed the double feature tonight Buddy. Always a treat. 73 Doug.

Amazing

Nice repair Buddy, I keep telling folks that the best piece if test gear is between the ears. Look, smell, touch.

well done

Excellent work, though I desperately wanted to reach for your ohmmeter and see the resistance on the relay before and after cleaning.

At 33:05 minutes when you are working on the broken trace, I think I can see another broken trace, on the right, the ones that go horizontal and curve to go vertical, just to the right of your hand, the top one has a mark on it like a cracked trace which has arced or corroded slightly, it might be nothing, but you may want to double check.

❤..tnx

Very relaxing to watch you work Buddy. I was a little confused by the schematic around those relays, however. Could not figure out the RX RF flow through those relays on the schematic.

Do RF they said, it will be fun they said!! They didn't tell me about the lightning damage that could occur....I'm sure this one got off pretty lightly.....another top video, looks like this model of radio could be a bit tricky if you had to get much further into it....thanks again for the great video!!

Your senses are basic test gear, minus taste (could get messy). ;) Great video. :)

Thanks for a great video. I just took my -940S out from the storage locker. It had been unused for some 25 years. It seem to have issue with the back up batteries, the meter is not showing voltage, frequency display shows readings but goes off after a a few seconds but returns when u rotate the knob. Reception is next to none... something might have happened when I switched it on for the 1st time. AVR board gives 28,5 V. The USB , LSB buttons do not illuminate. I wish I could find a circuit diagram and board component layouts, but maybe the best would be to get some radio specialist help...

Luckily it didn't get any further than the attenuator resistors. These can be a real pita to repair depending how deep the problem gets as your aware. I have two of these. One that works great and one that has developed a dot display problem until it warms up. Servicing the top boards that are stacked can be a bit of a pain. Hoping it's nothing more than a poor connection since the problem goes away when it warms up. Really need to dig that radio out one of these days and repair it. LOL, ever notice us repair guys always seem to have the most broken radios. Always to busy repairing everyone else's. :-)

Another great trace and track, you make it look so easy... My only question is. After re soldering that track, why was the pad & pin of the resister still moving when you put the meter probe on to test continuity?

In the first test with signal, AGC switch is in OFF position. Then the S meter is not activated, therefore you should not expect the pointer to deviate from input signal. In this situation, the movement of the pointer is subordinate only to RF gain.

hello radio shop guy nice video, i have the same problem with my 940 trans, and I'm wondering where can i find the relays?thanks

Buddy!!!, As Always, You Never cease to AMAZE!!, Me :-), I Miss Your Steady Hand and Eyesight, I wish I still Had them?? ;-) :-):-), getting Ready to TRY AND DO A RECAP, on that model, If I Lived Next Door, I'd Be One of Your Customers, As Always I enjoyed, Your Expertise, Cheers from Downunder, Mate ;-)

Very interesting, very well-done video, great skills shown. It's a birds nest to me but not to a guy like you who knows what he is doing!

NICE JOB ON THE TS940S BUDDY. VISION, SO I USE CAPS LOCK. THINKING ABOUT DIGGING INTO MY IFR1200S. SEEMS TO HAVE THE SAME THING WRONG YOURS DID. $200 GRRRR, BUT IT WAS A FREEBIE ALONG WITH A PAIR OF MOTOROLA R1200A'S THAT ALL WERE ON THE WAY TO DUMPSTERS SOME YEARS AGO. THEY FULLY WORK BUT THE IFR ONLY HAS WEAK GEN LIKE YOURS DID . RECEIVE IS FINE.. OJ KØOJ

I use paper money wetted with contact cleaner .

Wise advise! Nice shot again! All seems sometimes so easy but it's not. Don't be too humble!

I know I'm 3 years late... but @34:33 the resistor pin is moving. The pad at the break is lifted off the board.

19:00......HEY,I DIDN'T COME HERE TO TALK ABOUT THE WEATHER!!!!!Seriously tho,last couple of days I've been watching some of your Kenwood vids as I was considering a 480 or 940 as my first Ham rig,as both are for sale here on CL,and I wanted a feel as to what some problems they have being they are fairly old now,and after watching both you and MikesRadioRepair,you BOTH have gained new subs,Great job to you both for taking time to video,share,and EXPLAIN what you are doing.My only regret is that your #18 video was supposed to be a Part 1,and I never saw a Part 2? ;-(

O was recaping the PLL unit and got the same exact issue resolved the PLL for IC8 by removing the wax and resoldering but still the same and noticed that I am missing 5V on Carier board. Having issues tracing the wire it might be that something else was disconnected or getting pulled to gnd. Was there any update on this I see it hass been a long while back.

Not that it would have affected the repair, I was curious at 2:00 it shows 1KHz @ 1KHz deviation. That seems like awfully low modulation. I would have thought it should be 4 KHz deviation. It served the purpose but curiosity got the best of me :) Love your videos.

Q: just had one of these given to me. Had a couple things to fix. But on the clock. Are there any light bulbs to light the clock ?

I ought to send you my TS-940 for a check up

Could you please give a start up tutorial to show a recent ham re-tread how to turn on the TS-940S and get it up and running? I have recently gotten my general license after years off the air. Thank you

I've got the same trouble with the Kenwood TS-940, where the ATT -20 position is the same as the zero position, where it should be between the -10 and -30 attenuation. I haven't opened the bottom of the radio yet. The TS-940 also has many other problems. The frequency was unstable. CW sounded chirpy on CW and SSB was garbled. Cleaning the molex connectors on the PLL board fixed most of the chirpy CW, but I still heard the chirp one time after cleaning the connecters with deoxIT. Maybe the PLL and Career boards need to be re-soldered. What's your source for the relays? I think it would be a good idea to replace them. I also have intermittent display problems with the alternating digits and dots. Most of the time that problem doesn't occur. Maybe cleaning more molex connections and re-soldering the boards will fix the intermittent problems. The radio wasn't used for about 20 years. Your videos are very helpful! I've thought about junking my TS-940, but maybe it can be repaired. KY0L.

On your Sig Gen you say " To stop the ??? From expiring " ..... Can you say that again as I just didn't catch it ..... Thanks .

if you google, Q10 and Q4 are installed backwards from the factory. fixing this improves RX

I too noticed the trace you fixed move when you put the probe on it at 34:35. It was making good connection but could it cause future problems? I used to have a Kenwood TS-930 that I dearly loved until she finally gave up the ghost. I wish I had known about your skills back then. That TS-930 had an awesome receiver, especially for CW. Another great video, Buddy. Thank you. 73 DE K7RMJ Frank

good job. can you tell me if you know the replacement part for D5: BZ-192 19v 1 watt zener diode this is for the PA. I have 2 ts-940s and ts-930s with the same problem.

I have low receive on my kenwood 430. It’s going on the bench soon.

do you do repairs for your viewers i have a 940 with problems

Great job Buddy! My TS-940S watched along side me and knows if it ever gets sick it may have to go visit "Uncle Buddy"! ;-) 73 - Dino KL0S

I am brand brand new to this and want to explore buying a receiver like this. Would you suggest this one as a good start or something different? And what exactly can it pick up? Are there other frequencies I should explore. This says low receiver - no idea what that is or what it means. Could you explain? Thank you!

Hi Buddy, Another fine repair video. I doubt you would be able to affix that resistor trace back onto the pcb. 73 WB3BJU

That,s the kind of repars i like ricks radio shop

How do you remove wax in these rigs? Hairdryer and tilting the rig downside? Thank you for the tip

After 30 years in the business I have never seen a solder sucker that worked so well. What brand/ model is it? 73

thanks , great video but i think that last PCB trace u fixed , it appeared that the resistor leg still moves and looks flimsy , it might go loose due to temperature changes or vibration , u can see it at 34:35 moving as u put the probe of the DMM , i would suggest reinforcing it with a piece of wire i wanted to let u know regards

A few questions for you Buddy. Are those special bulbs they use for that fuse circuit? Could I use those same bulbs or a similar setup for my own homebrew protection circuit?

😀👍

Hola amigos, mi TS940S, tiene problemas al encender(POWER), queda el display en forma intermitente,sin indicar la frecuencia de trabajo, ademas no tiene recepcion ni transmision. gracias.73 lu1hj

PLEASE DO VIDEO ON THE TS-930 HOW TO GET FULL POWER ON AM 11MFIXED INTERMITTING ON FINAL BOARD TURNED C642 AROUND ON AUDIO TURN VFO SLOW FREQ. DOE'S NOT CHANGE THE FASTER U TURN IT CHANGE MAYBE SOME THINGS U DO MAY HELP ME LOVE YOUR VIDEO'S THANKS GOLDDUST IN MS.

Did he want the generator on FM?

hello buddy, I'i sent u an email also a reply on a question about the relays i hope u found the time to reply, i know how busy u must be, but if u do knw where i can get those components ? plz let me know? thank u sir. 73,s have a good day

The ATTN resistors are in OHMS and NOT K-OHMS.

Have You got a one Transceiver Yaesu FT-ONE?

:)

did it all nothing changed

No offense, but I have been taught to repair the track by soldering a copper wire. Using only solder will not last that long.

Buddy: the PCB repair was not the best. Review the video you can see the pad move when you checked after soldering. IMHO this is a spot for later problems. I would have added a piece of wire. The fundamental problem is likely that the PCB is fragile to rework. Use of the Pace tool is important - but still damage can happen, especially with the older PCB technology. They are notably fragile. 73

It's not 100K it's 100Ω