Great video. Love the big sweeping meters on that Onkyo.

This is a superb channel, so much info and tips condensed in a tiny video.

Great to see a real tech, not like some of the hacks out there! Great work!

I like the LT1166 bias servo IC, which also offers over current / short circuit protection for the output stage. I have used this IC several times in high power output stages.

Subscribed! Thanks for taking the time to help out Ray..

Nice diagnosis and repair!! TY for sharing!

Great learning brushing up root cause to fault finding on bias issues

@raygianelli3612

27 күн бұрын

Thanks Jack. Learning never stops!

Nice job and thanks for the repair content.

Very informative Thanks Ray

Great video !...cheers.

Excellent.

Nice work! Iam currently working on a M200 and was wondering about the two back2back 4,7uf electrolytic on the relay board. The two ones besides the three blue resistors. It even says there should be a diode :)

Hey Ray, I have an Onkyo M-504 that is having issues. I am not sure where you are located but I don't have the equipment to fix. I also have a 4 channel dBx amp that is not working. Where do you get those schematic diagrams?

@raygianelli3612

Жыл бұрын

I'm in South Florida. Most schematic I use come from HiFi Engine.

@johnsonrobinsonjr1272

6 ай бұрын

​​@@raygianelli3612East or West Coast? I'm in the Tampabay area and can always use a top-notch tech that's only a few hours away.

@raygianelli3612

6 ай бұрын

East, in Palm Beach county.@@johnsonrobinsonjr1272

excellent video! can you provide a link to the minigrabbers you use?

@raygianelli3612

2 жыл бұрын

Do a search for Elenco TL-12. I got them at the site named after the South American jungle. :)

@Foozlebop

2 жыл бұрын

@@raygianelli3612 are they gold plated?

When you use 100mV input is that peak to peak or RMS please ?...cheers.

@raygianelli3612

2 жыл бұрын

That was 100mV RMS, but probably closer to 200mV as the generator is calibrated into 50Ω and it was unterminated.

You mentioned it’s not a good idea to replace output transistors with aftermarket. I have a Marantz MR235 with right channel shorted transistors because of age only aftermarket are available.

@raygianelli3612

Жыл бұрын

When we speak of aftermarket we are referring to broad spectrum replacements such as NTE or others like them. A far better solution for output transistors is to select a current production transistor from manufacturers such as Onsemi, Toshiba etc. Look at the data sheets for the 2SA1492/2SC5200, they may be suitable.

I have an Onkyo m 504 amp that I bought in 1988 while stationed in Spain. One of the speaker select switches won't stay engaged. I think it's a bad detent. Anyone know if replacement parts can be found for these vintage amps or can this one be repaired? Any info would be GREATLY appreciated :)

@dbel723333

Жыл бұрын

@@erdemkaya6472 yes..nothing came up other than other amps for sale :)

Ayuda!

Dude looks like a lady.

@raygianelli3612

5 ай бұрын

Thanks you for your comment. It adds immeasurably to the discourse on this channel. Immeasurable in the most literal sense.

I have an M5090. Then I would like to get serviced. Can you send me your contact information?

@raygianelli3612

8 ай бұрын

Mark, I'm currently working through my backlog. That's a heavy beast! Where are you located?