RP112 100 WATT COMBO.

Regortteggel61

Good Morning, I have a RP112 100 watt  with a dubious past. Looking inside its a GP1 board and it appears to have a component missing. Looking to the right of the mains transformer there is a bank of 3 fuses, directly beneath that there is a black link and below that is were the component is missing and has been replaced by a piece of wire. Looking at a video of the same amp it appears to be a round fuse soldered link or could it be a thermal switch . This is a UK version, could anybody please help me with what that component is, many thanks.

Full Name
Mike Griffin
Music Man Equipment
MM 112-RD-65

Member for

11 years 3 months

mgriffin155 Wed, 07/02/2025 - 11:51

Yes.  Most likely a Thermal Switch.  Check the schematic for RPs in Downloads and Resources. -mgriffin

Full Name
ROGER LEGGETT
Music Man Equipment
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3 years

Regortteggel61 Thu, 07/03/2025 - 04:35

Hi Mike, I have looked on the schematic for GP1 board but could not see anything, but must admit I am not an expert at that. The amp side of the connection goes to pin 7 on the valve base, I have not seen this on the other amps we have. I have bought another one today with a blown mains transformer which will be collected on the 15th, seller going on holiday, so at least will have something to look at. Many thanks for your time.