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A customer has reported to me that the red power switch on his Marshall JCM2000 tsl601 is glowing at about half normal brightness when the switch is in the off position. Also, when turned off at the wall, it continues to flicker for a while before going off completely. Does anyone know what could cause this?
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I should probably add that I’ve never needed to touch the wiring on the back of the switch, so that hasn’t changed. -
Try pulling out the power plug, turning it 180 degrees and plugging it back into the socket.Comment
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Our power sockets here in the UK don’t allow us to do that, they only fit one way. If you’re thinking that maybe the live and neutral are reversed in the socket, this is the same socket he’s always used and it has not happened before. Thanks for your input though.
Originally posted by x-pro View PostComment
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Well, it could have been done by an electrician on the outside of the mains entry to the do.
There is another option. Get to the mains switch and clean the surfaces between the switch contacts. Over time, moisture and dust will settle there. If the indoor air is humid enough, much less near the sea, this can cause leakage between the contacts. Microcurrents are sufficient for the neon bulb to glow.Comment
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Sorry probably not much help but I have come across this fault in the past on a Marshall. My memory is foggy but it was wither a bad switch or bad wiring just can't quite recall. I think x-pro suggestion is a good one though and. If you can substiturte the switch to check if it is that it could be a quick win.Comment
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This was reported after transporting in a car in quiet cold humid conditions, so condensation in the switch could be a possibility. It’ll be interesting to see if the fault remains after a couple of days. If it does I’ll suggest replacing the switch.
Originally posted by x-pro View PostComment
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