Help! need troubleshooter

Tubes Asylum

Questions about tubes and gear that glows. FAQ

216.192.102.55

got a problem with my Jolida 302A. The left channel stopped working yesterday morning. There is a faint and buzzy signal but that's all. What's interesting is that when I turn the off switch, the sound comes through clear and at the right volume for a few moments as the tubes go down.
At first, I tried the controls in case there was some bad contact. No obvious sign of a problem there. Then I tried the tubes: I replaced each tube or pair one at a time; no luck there, same problem.
next I opened up the works to check for any obvious shorts or visual problems. I'm not experienced enough for serious troubleshooting at this point; all I can do is some simple soldering and replacement of parts. I found a wire that had some burn through pressed against a resistor. It came from one of the left side preamp tube sockets, so it looked like a problem. I did a quick splice to be sure there wasn't a short there; alas, same problem. so I am suspecting the resistor but I don't know what to check for or how to check it. I'm probably going to take the whole thing into a shop soon, but I wonder if anyone can clue me in to what could be going on.
I'd appreciate any comments or suggestions. Thanks.
Jim

This post is made possible by the generous support of people like you and our sponsors:

Kimber Kable

Topic - Help! need troubleshooter - Jim Kain 07:32:04 04/17/99 (0)

You can not post to an archived thread.