Hi
I have an earlier version of this amp with the printed and not raised Technics logo. The amp is on a wooden rack which is in turn on a carpeted floor. If I wear a certain pair of slippers a static charge is building up. If I touch the metal case of the amp near the power switch it immediately shuts down.
When it first did this I thought it was a loose power cable. It comes back on again fine if I turn it of and turn it on again and functions with no issues. DC is around 2mv on both channels, etc.
I have recently replaced the speaker terminals as the original plastic twist lock ones were loose and breaking up. I have not used this unit much so not sure if it was an issue before the changing the speaker terminals.
This is not a major problem but was curious to know if anyone has any thoughts on the matter. The initial solution is not to wear static creating slippers!
Thanks
I have an earlier version of this amp with the printed and not raised Technics logo. The amp is on a wooden rack which is in turn on a carpeted floor. If I wear a certain pair of slippers a static charge is building up. If I touch the metal case of the amp near the power switch it immediately shuts down.
When it first did this I thought it was a loose power cable. It comes back on again fine if I turn it of and turn it on again and functions with no issues. DC is around 2mv on both channels, etc.
I have recently replaced the speaker terminals as the original plastic twist lock ones were loose and breaking up. I have not used this unit much so not sure if it was an issue before the changing the speaker terminals.
This is not a major problem but was curious to know if anyone has any thoughts on the matter. The initial solution is not to wear static creating slippers!
Thanks
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Something in the logic section is getting zapped with a spike - I'd check all the case screws are tight and bonding the parts of the case together with a good ground - all the metalwork in the case should be low impedance to mains earth, forming a Faraday cage.
Try not to zap it as there's no guarantee it will survive indefinitely.
Nylon carpets are a real issue for electronics, some textiles add a small proportion of carbon fibre to address this, and there are commercial anti-static sprays available.
Try not to zap it as there's no guarantee it will survive indefinitely.
Nylon carpets are a real issue for electronics, some textiles add a small proportion of carbon fibre to address this, and there are commercial anti-static sprays available.
Just to add to Marks post -
Try not to zap it as there's no guarantee it will survive indefinitely.
A "soft zap " can cause a minor fault in a chip which doesn't stop it working but cause unusual faults to occur --this is a proven fact.
While I worked for BT the zap cords had 2 Megohm resistances at either end.
Try not to zap it as there's no guarantee it will survive indefinitely.
A "soft zap " can cause a minor fault in a chip which doesn't stop it working but cause unusual faults to occur --this is a proven fact.
While I worked for BT the zap cords had 2 Megohm resistances at either end.