• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Help a newbie out with his Sherwood S-800iii

Played wonderfully for several hours. Now a weak right channel, very weak.
Is there something easy/ cheap I can replace on my own to troubleshoot?
Is it likely a tube issue or is it all the wiring underneath?

I'm a moderate DIY'er in general but I've never soldered anything or done any type of testing...
-Shawn
 

M Gregg

Disabled Account
2010-06-28 11:04 pm
UK
Played wonderfully for several hours. Now a weak right channel, very weak.
Is there something easy/ cheap I can replace on my own to troubleshoot?
Is it likely a tube issue or is it all the wiring underneath?

I'm a moderate DIY'er in general but I've never soldered anything or done any type of testing...
-Shawn

You need to understand that if you make a mistake it could be fatal!

The voltages on your system are High, and will possibly remain charged up after power off.

Your fault could be a bad coupling capacitor! If you want to do this your first thing is to get and post a circuit diagram! If you are not confident don't take a chance!

Do not do any work on the system until you have read the safety advice on the forum!

Regards
M. Gregg
 
Hi Vandalfsens,

You need to be sure the fault is in the amp.

Swap over your source leads to see if the fault moves to the left channel.

If this makes no difference then swap over your speakers leads.

If the fault still remains in the right channel then you know the fault is in the amp.

This may sound a bit anal, well that's because the fault-finding process is anal :D

Good Luck Bill