D-321 no sound on left headphone channel

Timing.Fanatic

Hi,

I've recently picked up a D-321 and there is no sound on the left headphone channel.  Beeps sound good on both channels though.  Looking at the SMs found on this site (thanks!) it looks like I should consider replacing C106?

Here are some other observables:
- Line out works well

- AVLS in OFF position produces almost no sound
- Moving the AVLS switch from OFF -> 2 produces a slight bit of sound on the left channel
- AVLS positions appear to work all right on right channel depending on volume level


Thoughts?  I don't have a oscilloscope (only DMM).

Thanks.

reent

1 clean avls swch s301  and vol potentiometer rv301
2 replace c106 c206， ud better replace all the white capacitor

reent

replace amp chip with la4534,its much better than 4533

Timing.Fanatic

Thanks!  I'll go ahead and change out those capacitors!

I'll also look into the LA4534 - that may be a secondary project after I get the headphone stuff working!

Timing.Fanatic

So I am finally getting around to doing this.  I'm not electronics savvy but I understand that in most cases one should not replace capacitors with a different capacitance than specified, but in this application, can I replace the two 330uF 2V caps. with 470uF 6.3V caps?

I don't have a Al. Elect. 330uF with the appropriate dimensions on hand, while the 470uF will fit.