Surprised the copyright flagging TH-cam bots haven't flagged this video with the longer clips of music playing. Would hate for you to get in trouble. Another interesting (if not fairly simple) repair. The "no parts required" repairs are always the best kind. That old glue looks like it becomes somewhat corrosive as well as conductive looking at the ends of the resistors around it. Turned them into green crusties by the look of it. Thanks for the fun and informative videos.👍
Repaired same kind of unit here in Finland. All those caps were so bad and tons of bad solderconnections. Many caps i could even pull straight out of the board. Very very nice sounding unit but it goes way to warm. Should have a big fan for trouble free operation.
It's actually a really good amplifier. I bought one for cheap, probably because of these intermittent issues. The protection was cutting in, whenever I moved the volume too fast, or I touched the balance. After fixing all the bad soldering and spraying the balance knob with WD40 (Deoxit didn't to anything) everything went back to normal. Also very important to change all the large capacitors (6 or 8 of them). They go out of spec really really bad, because of the heat inside. It's not too well ventilated.
I have the same Sencor AM-FM stereo analyzer. I really like mine. What is going on around those parts besides the filer capacitors? It looks like there is some corrosion going on.
Auto class A keeps the amp in a class A state until the audio level reaches approximately 15 watts rms. Watts into 6 ohms, I'm not sure as I do not have the service manual in front of me now. Hifiengine.com states 100 watts into 8ohms so into 6 ohms probably approximately 125 watts
Great repair brother... quick question I have a jbl prx718xlf amplifier module that has a preamp board problem...if your in the US area I'll email to you about the problem I have with the amplifier preamp circuit if you got time brother.... thanks.
Do you mean you will help me repair my electronics? That would be great! I have a no name tablet with a USB female needing replacement. Not quite sure which goes where!?
these days they just deleted the QC department. Crap is now breaking around the 2 year mark per design,it's horrible. LG led tv's being a great example of that,every startup they push the backlight well over 100% for at least 5 sec. Great way to make sure they die well before they should and they do.
Gotta tell ya, I've seen some crazy thing come out of the factories, and this was one of them.
Another good job on your part.!
Surprised the copyright flagging TH-cam bots haven't flagged this video with the longer clips of music playing. Would hate for you to get in trouble. Another interesting (if not fairly simple) repair. The "no parts required" repairs are always the best kind. That old glue looks like it becomes somewhat corrosive as well as conductive looking at the ends of the resistors around it. Turned them into green crusties by the look of it. Thanks for the fun and informative videos.👍
The bots did flag this video, I can not monetize it, so no ads but its okay
Loving all the repairs recently =D
Thank you! Hoping to post many more in the near future!
Nice find! I always like those easy, but interesting, almost unbelievable and cool finds.
.... I don't care what INTERPOL say, I think your a Legend !
Repaired same kind of unit here in Finland. All those caps were so bad and tons of bad solderconnections. Many caps i could even pull straight out of the board.
Very very nice sounding unit but it goes way to warm. Should have a big fan for trouble free operation.
I'd recommend a muffin fan in the rear of the casing (similar to PC and some plasma TV fans) for cooling and better air-flow.
It's actually a really good amplifier. I bought one for cheap, probably because of these intermittent issues. The protection was cutting in, whenever I moved the volume too fast, or I touched the balance.
After fixing all the bad soldering and spraying the balance knob with WD40 (Deoxit didn't to anything) everything went back to normal. Also very important to change all the large capacitors (6 or 8 of them). They go out of spec really really bad, because of the heat inside. It's not too well ventilated.
Excellent video as all ways! Thank you.
Lousy spelling....is it always that bad!?
Nice , always a fan of Yamaha and Sony ES Series stuff.
good job sir
I have the same Sencor AM-FM stereo analyzer. I really like mine. What is going on around those parts besides the filer capacitors? It looks like there is some corrosion going on.
From the PCB colour, This thing looks old AF, apparently when it was popular to use Lead solder.
I have the same amp what does auto class a button do and how many watts in 6 ohms?
Auto class A keeps the amp in a class A state until the audio level reaches approximately 15 watts rms. Watts into 6 ohms, I'm not sure as I do not have the service manual in front of me now. Hifiengine.com states 100 watts into 8ohms so into 6 ohms probably approximately 125 watts
NorCal715 okay thanks for your help I paid $40 for amp on letgo I have my elac dbr 6.2 hooked up to it sounds amazing
My Yanaha AX-596 has been trouble free.
Did the fix take care of the voltage offset you had?
Yes it did.
"It looks like someone tried to solder these resistors..." probably at the factory judging by the rest.
Great repair brother... quick question I have a jbl prx718xlf amplifier module that has a preamp board problem...if your in the US area I'll email to you about the problem I have with the amplifier preamp circuit if you got time brother.... thanks.
email me at norcal715videos@gmail.com
@@norcal715 thanks brother sounds good...I'll be sure to do that.
As a Heathkit builder for most of my life, I can authoritatively say, the bigger the blob the better the job is utter BS.
Shocking
Do you mean you will help me repair my electronics? That would be great! I have a no name tablet with a USB female needing replacement. Not quite sure which goes where!?
huh? email me at norcal715videos@gmail.com
Wow, that is so sad. Such poor quality from a Yamaha unit surprised me!!
Nice repair
I can only imagine the dunderhead who forgot to solder those wires before shipping.
When the glue gets moist, Electric conduction
Neat
QC was asleep at the factory on that day!
Asleep! They were out back getting STONED is more like it! LOL
these days they just deleted the QC department. Crap is now breaking around the 2 year mark per design,it's horrible. LG led tv's being a great example of that,every startup they push the backlight well over 100% for at least 5 sec. Great way to make sure they die well before they should and they do.
@@bertvisser6423 Planned Obsolescence, The New Marketing Strategy... Live it, Love it, Learn it, Practice it!
Throwaway society we live in at this time!
Why do they do the over 100% start up. Just to damage the LEDS, so miserable. I have some LEDS on order for a LG at this time. Video soon to follow.
That Yamaha I bet was not made in Japan , prolly Malaysia.🤣
Why did the Nichicons poop their pants ?
Filter caps pooped their pants ?
Either that or it was just glue.