Quote:
Originally Posted by JCMNelson
The lamp comes on, the valves heat up, but there's absolutely no sound at all! Tried different cables, with and without guitar, but nothing, apart from a pop when the amp is switched off (everytime)!
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Aw, rats. If you're getting a pop we can rule out the speaker. Still, check it with a known good speaker.
Swap tubes with known good tubes.
Tube swapping results in no sound. Are you sure the last tubes you put in there are fully seated? Did you damage a socket?
Make sure your 6V6s are fully seated and properly oriented. If you have a broken center pin you can stick them in bass-ackwards. There's are Chinese sockets in circulation with oversized center holes, you can stick the PA tubes in there in any orientation.
Quote:
Originally Posted by JCMNelson
I haven't opened it up to check anything yet, anyone got any ideas?
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First thing to check when you open it up is voltage. Check 6V6 plates, 6V6 screens, then work your way down to preamp tubes. Be careful! It's live, hot and it can bite.
Look for a broken wire or a bad solder joint.