Hi. My power switch snapped on my Reisong A10. I was sent a replacement however I’ve never worked on tube Amps. Is there anything special I should know prior to going into it to replace it? I know there’s high current stores I’m sure in the Caps.
Any advice appreciated.
Any advice appreciated.
Leave the amp off and unplugged for 30 minutes or so. There should be bleed resistors across any high voltage caps but you can not rely on that being part of the design.
If you have a meter then you can just measure across any large power supply caps and make sure there is no high voltage present.
In any case, if the switch is on the incoming mains supply (I assume it is) then it should be isolated from the amplifier circuitry via the mains transformer.
Take a picture of the wiring of the original switch for reference.
General rule if you are not sure about voltage being present is not to use both hands to work on it. In other words do not hold the chassis in one hand and touch circuitry with the other.
If the switch is different in any way to the original then you should confirm the contact configuration first by checking it with a meter for continuity.
If you have a meter then you can just measure across any large power supply caps and make sure there is no high voltage present.
In any case, if the switch is on the incoming mains supply (I assume it is) then it should be isolated from the amplifier circuitry via the mains transformer.
Take a picture of the wiring of the original switch for reference.
General rule if you are not sure about voltage being present is not to use both hands to work on it. In other words do not hold the chassis in one hand and touch circuitry with the other.
If the switch is different in any way to the original then you should confirm the contact configuration first by checking it with a meter for continuity.
