Denon AVR-788 Receiver shuts off when cold when volume is turned up even with no input or speakers

[@doctorjohn-burgtekie]

Nice repair a real head scratcher on this one.

[@njm1971nyc]

My Denon a/v receiver was doing the shut-down and I realized that Zone2 (unused/no speakers connected) was set to a high volume level. Problem disappeared when I turned Zone2 off. I don't think it was faulty, just a really crappy design. With speakers connected, Zone2 worked totally fine.

[@saarike]

This was really interesting phenomenon and nice repair! Thank you.

[@slee5045]

Love your projects.

[@sonyajones]

Great repair job! Great video! Thank you.

[@GeoffSeeley]

Great troubleshooting skills!

[@amilcarmunhoboa9666]

Mr NorCal I appreciate your repair.. I would like to be like you ..

[@amilcarmunhoboa9666]

I really really love your repair..

[@audioman3017]

Great Channel!

[@balaji3103]

I understand how tough this avr repair works

[@giorgostexnikos6976]

amazing video.

[@arthur3968]

I have a Denon AVR-1908, it's pretty simular to this one. I'm facing a similar problem, I need to set the volume way higher than expected to just hear a high pitch noise and barely hear the sound that I'm playing. When I set the volume to 10dB, it starts to smoke from the amp board. Watching your video I will try to listen the sound directly from the DSP board, to try to identify if the problem is coming from that.

[@mohanapritha]

How to identify which IC control the volume on denon avr? Please reply

[@dmwtech4495]

You are really good dude. :)

[@robbo6460]

Where did you get that ESR tester?

[@norcal715]

Anatek Blue Esr Tester anatekinstruments.com/products/fully-assembled-anatek-blue-esr-meter-besr?srsltid=AfmBOoon7qpWW-8uHourOb9hgKDdorMEM1UXj-x3kG1-JLXbvkB465Cv

[@maryward613]

When we power up our AVR-788 it crackles at any volume and the power stays on.. We took it in for repair (2009) and the work they did was: Fixed Rep HDMI + AAL BUL. When we picked it up the guy said it's fixed now, but it will do it again. Sure enough a few weeks later it did it again. Pulled out my Sansui 9090 and that Denon has been sitting ever since! Any idea what is wrong. Son is interested in it.

[@ALLMIGHT_PLUS_ULTRA]

Would really wanted to know why it was the hdmi board, sure there are inputs and outputs for hdmi but I don't understand why the volume would affect hdmi functionality where you only get audio and video signals.

[@pauledwards2817]

Cap rot strikes again but a good find. I have always wondered, how to keep amplifiers going. Any advice. Perhaps that would be a good video. Myself I leave them on all the time, amps that is, never put them in a rack or put anything on top. If they are off, not having anything blasting out when the relays kick in. In other ideas or do I have it all wrong?

[@norcal715]

The thermal cycling can lead to bad solder connections. Setting the volume at minimum upon power up is a good idea too. The cooler they run the longer they will last also.

[@jeanangi3233]

How can you help me please I have an amplifier it works normally but as soon as I increase the volume it automatically turns off and sometimes even blows the fuse 

[@stevedenenberg2873]

Great job my demon is doing the exact thing looks like I it to get to soldering. Or can I send it to you

[@randyr.parker2698]

Love it! WOW, that is almost ready for a complete recapping. SMD caps.........SMH. Worst thing ever invented for electronics.

[@marscellkudus]

do you sell mcu denon avr 1311, toshiba T5CN5

[@joelopez7459]

How much would one of these repairs cost?

[@jeremiemorotti]

I have a reciever with the exact same issue, I don't want it you can have it if you want lol

[@norcal715]

Where are you located, I am in Northern California (Chico)

[@jeremiemorotti]

Up in Canada, I ended up taking it to e-recycle a few days ago tho so it's gone to the wind now lol

[@mauanderuk]

Nice fault finding.

[@montygore]

Fastest soldering in the world

[@jeanangi3233]

Hi

[@MMWA-DAVE]

disappointing number of dead caps - I'm guessing these are simply crap quality china specials thanks to cost cutting. This thing cant even be that old since it has HDMI