Re: Faulty practice amp
Posted: Mon Mar 06, 2023 2:15 pm
If it is coming and going based on physical manipulation, I would take a non-conductive "stick" and tap all through the wiring and everything connected to it (capacitors, fuse, transformer) to find the source.
The ideal "stick" is non-conductive (IMPORTANT!) and has some weight. A plastic chop-stick or knitting needle is perfect.
If something does change with vigorous tapping, narrow the source of the problem down by reducing the force of the tapping and finding exactly which thing is the problem.
If nothing changes with vigorous tapping of everything, you will have proved that the fault isn't mechanical. If it isn't mechanical, let us know and we can continue the search.
The ideal "stick" is non-conductive (IMPORTANT!) and has some weight. A plastic chop-stick or knitting needle is perfect.
If something does change with vigorous tapping, narrow the source of the problem down by reducing the force of the tapping and finding exactly which thing is the problem.
If nothing changes with vigorous tapping of everything, you will have proved that the fault isn't mechanical. If it isn't mechanical, let us know and we can continue the search.