Re: Marshall Stanmore Repair

Hell Yeah! I fixed mine by replacing both 220uf caps that was bulging and the 3.2uf capacitor on the hot side. Also added the 200 ohm resistor like recommended by others as my board had the resistor removed from factory.

The board is a pain. Was struggling removing the soldering from the capacitor holes. Found that using hot air and solder sucker worked best for this thick board.

Make sure the connector to the control board is pushed in correctly, the gunk can make it look like it's connected. This was the reason I had no...

Re: Marshall Stanmore Repair

I suspect my transformer is bad too. I was thinking about injecting voltage directly into the cold side and bypass the power supply/hot side. Not sure how the best way to approach this is and can't find any information on the TriStar transformer.

Re: Marshall Stanmore Repair

Hi everyone.

Great thread! Just picked up a marshall stanmore that has a weird problem. It powers on - but every 5-6 seconds a loud static noise comes from the speakers. Volume doesn't seem to work and each time the noise is present the led indicator light will dim like it doesn't have enough power.

I've taken it apart and can faintly hear the noise on the board with only the power connected. It's hard to pinpoint but i think it's coming from one of the transformers or on the hot/power supply side.

I can...