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SWR 220


paul_5
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Anybody else had this problem with their 220? The power light doesn't come on, but the Power amp clip light is on all the time and nay sound comes out. I've tried plugging the bass into the FX return and Power amp in, but still no sound.

Any ideas?

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I don't know why you have no sound with the power amp but the power amp clip light suggest that one low voltage rails (either +15, or -15V) is missing. Can you measure the voltage on Zener diodes (after large, white resistors) in the power supply? I'm only guessing but I would start with this measurement.

Mark

Edited by MarkBassChat
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[quote name='BassBod' timestamp='1362090104' post='1995773']
No idea...get it to a good tech - mine have commented on how well they are put together (meaning they are very fixable!) [/quote]

They're dead right - nearly all of the components are easily available 'off the shelf' stuff that most decent amp techs will have to hand.

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  • 2 weeks later...

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