Under the bel canto sticker it's say TA0103A. Dc can be stable for some time, and suddenly it makes a very short increase in dc and makes small popping sound i the speaker.
I think i have read some place that evo uses fixed dc of some kind.
I think i have read some place that evo uses fixed dc of some kind.
You just replaced caps, and was working fine before? I would resolder those caps. One bank of caps on your bad channel could be culprit ... Or a bad cap.
I didn't try it very long after recap. I measured all caps before soldering. Can try resolder the caps first.
Xmas holiday over😁. And time to do some soldering. I have resolder all big power caps, and still the same popping from the leftboard, ch1 and 2. I don't have dual scope right now, and used my single. Channel 2-4 shows 5 too 5,5 mV dc under testing.
But ch1 shows 0.000 on the dmm, soon as i hookup signalgenerator and scope it shows 2.2 Vdc. Not good at all.
So the trouble is ch1 of some sort.
There is now adj pots in the BC.
Anyone knows how this amplifier regulates the dc offset?
But ch1 shows 0.000 on the dmm, soon as i hookup signalgenerator and scope it shows 2.2 Vdc. Not good at all.
So the trouble is ch1 of some sort.
There is now adj pots in the BC.
Anyone knows how this amplifier regulates the dc offset?
On one of my ta2022, to adjust the offset it looks like a blue rectangle with a brass screw on the top ... Variable resistance.
They can be hidden under the plastic hood ....
It's becoming fashion ... 🙄🙄🙄
They can be hidden under the plastic hood ....
It's becoming fashion ... 🙄🙄🙄
