Nice! Sometimes it's nice to have a "quick win". Thanks for the video Ray.

Great repair and good to save it from jaws of the recycle center. I wish I had the $ to send you my dying NAD 9060 6 channel amp to completely update. I'm now getting hum and distortion in several channels. To save it I will have to recap and replace any other failing/failed parts. This is likely going to be a major task. Luckily, I have many great electronic techs like yourself to give me inspiration and guidance. All the best to you and yours, Kevin

It's always nice to have a relatively easy fix and great to have the skill and knowledge to verify. Good job and thanks for sharing.

Gotta love the easy ones!

Good repair. What about the other resistors in that area? I guess it's just wait and see. Always look for to your videos Yours and Shango .

Nice quick repair ! You can also replace the 120 ohm on the plus VCC rail with a one watt resitor !

Thanks Ray! Well done, as always! The process is the most interesting thing of all. Somebody needs to write a book like "The Inner Game of Electronic Repair"...

A lot of work with this Marantz tuner, but with a good result. In this situation why not suspect that the local oscillator is detuned? Someone could have manipulated it. Or a problem with the J-FET RF input amplifier?

Good job as usual Ray. You explain your diagnostics and trouble shooting very well. Look forward to more. I also have realized that accumulation occurs much easier than decumulation 😉, but I’m getting it done…moving soon too. Good luck with the strike…CWAStrong!

Good to see you back at the bench! Nice diagnostics and, yeah, every Pioneer I've touched has had a real maze of a power supply.

Nice, Mr. G is back! Thanks for taking the time to share your knowledge and technique. 👌💪

I really dislike moving so don’t envy what you are thinking about doing. Good luck.

Glad you’re back online. I seriously doubt it will be a long strike nobody can afford a strike any more. I survived three strikes. Metro Atlanta is a good area. Climate is reasonable year round. Housing is no where as high as the area you live in.

Another awesome one, Ray :- ) I'm sure this will be helpful in the future when i have one of mine act up or am checking out something for someone.. the little bits of info are super valuable to us fairly new to troubleshooting. I'm happy things are well with you and you are back. Rock on dude ! I have some light hum in my Nikko NR-1415 that needs to be addressed at some point (probably over the cold season when i'm indoors more!) and all these little bits of info help!

Great info, Ray! You have a fantastic teaching style.

Ray, so glad you're back.

I have a 2246 doing the same thing. Clicks and the fan jumps when trying to power up. Where do i find the schematics so i can try to troubleshoot mine?

Glad to see you back! For future reference, the 150 Ohm resistor in series with that 1318 is also a common failure, and the blue (sometimes white) Sanyo coupling caps are notorious. In the SX-828 they cause big problems in the tone circuit but I think on the 850 they used Elna for that.

Nice to see you back Ray ! 😀

I think we work for the same company! :)

Thanks Ray, good to see you back

He’s back!! Really missed your videos. Thank you for taking the time to put this together Ray.

I hope your strike is a short one. I was on strike against Illinois Bell for a week and a half in 1983, but I was young and still living at home, so it was just an extended vacation. I can't see managers taking techs spots nowadays, especially in a CO environment or working on customer network equipment, as, very few, if any, know the requirements to even access the info needed to troubleshoot, resolve or install new new circuits or equipment. It's different to see how Pioneer powered some of the input amplification with a separate power supply, as most every amp powers that part with the same rail as the rest of the amp section, so I could see how that would throw troubleshooting the DC offset for a loop.

Welcome back!

Great video.

nice to see you back ray,a d hope you get things done soon with your life my friend.first thing first, we always be here waiting for your excellent videos. ray one question do you have a nice distortion analizer for sale If you do please let me know tk in advance.

Welcome back Ray! Been hoping to see some more of your videos and I'm glad you put this one out. Sorry about your job! Why are you wanting to leave Florida? I bet those hurricanes can be a lot to deal with for sure.

good vid

always nice to see a video from you ray. glad to see you back. i found an updated kos (kill on site) list awhile back. about 50 transistors are on it. i do not have a link but it's on ak somewhere.

I have an SX-5570, which is the black faced version of the SX-950. In the 6 years I've had it, I have had to go in and make repairs about every 6 to 8 months. While I am no advocate of shotgunning components, I finally did that this past spring. It was just a cascading chain of different failures over and over again otherwise. Part of the problem may be the fact that this unit was in a shed for the past 15 years before I acquired it, so it would have gone through extreme heating and cooling cycles here in Pennsylvania. It could be as cold as 10 to 20 degrees below zero in the winter at times and as warm as 100 degrees in the summer on occasion. It is running much cooler and the sound is very good now that I "shotgunned" it. There are many transistors in these that are on the naughty list. I replaced almost all of them. Did not do the pass transistor and it's opposite polarity equivalent in the power supply that you replaced in this video though. My voltages were still spot on through the entire power supply. Hopefully it will be many more years before I have to repair this again.

Welcome back Ray. Every 1318 I come across goes byebye. Good to see you again and thanks as always.

Good to see back.

Hi Ray, very nice to see you again, nice work congrats on the win over the machine 👍. It happened to me that I forgot to measure a part of the circuit, but if you measure everything, you also write down the values ​​and during the testing, the source will lose 7V and you will only find out when the parts burn, which is annoying. That's why I made this multi-channel voltmeter and I constantly monitor all voltages during testing. Thanks for the link 🙂 to the list of problem transistors, I was just looking for them, I have one problem amp on my desk right now with a random glitch in one channel. Nice day 🙂 Tom

Thanks! I like to go to Florida, but if I stay too long??

Howdy Ray ! great to have a repair vid, so what's up with Florida ? I thought it was a utopia !

Nice tip about the Ten Worst Transistors list. Glad to hear from you again.

Please move to east Tennessee we need a good tech around here

Hi Ray! Glad your back. I have replaced many of the 1313 in my Sansui's. Some were so bad, that tapping on them was inducing noise in the output.

Hi there again, it's good to see you.

Welcome back Ray, finally see you again.

Glad you're back!!

Ray this is a typical problem. Tek would run 15V caps at 15V not good! The metal can ones never fail. Derate at least 20% I usually go for 50%

Is there anyway to bias and/or offset an amp without a service manual? I have an SAE 2201, no service manual seems to exist, but it has 2 adjustment pots on it.

Any chance you are taking these for repairs now? Mine actually plays except the right channel which I am pretty sure it's the dolby board. I know you mentioned 8 months ago you had a backlog. Thought I would check back. Thank you!

This is outstanding advice. Thanks Ray.

Thank you for sharing, much appreciated

Good jop!

I know you mentioned in video about the HP 8904A serial numbers, do you happen to know which ones with Option 1 I should be looking for?

Another great video. I did laugh out loud at your joke at the end :)

Mine left channel DC offset is about at 190mv, any suggestion on cause of this? I am guessing the 1st differential Q7103(7103-1 7103-2)? And this is one of those dual 5pins transistors, no longer available. I know this has been a while, any help would be appreciated.