Repairing an RM Italy 203P

[doffo]

Hello,

I have a couple of the RM Italy 203P amps that I bought nearly 10 years ago. They are still working fine, but I want to at least acquire some parts like the relays and also the transistors. I did buy some ONSEMI 13N10 transistors, but a set of 4 for now. I was reading and it mentioned that one needs to set the gate voltage if you swap out for the 13N10 transistors. I had seen some pictures where they put a variable resistor so you can set the gate voltage. That being said, if the gate voltage needs to be set, does anyone here know what points to test with the multimeter and if the amp is keyed up while setting it etc?

I just want to keep the amps going and have means to repair it if that day ever comes. Any help is appreciated. Thanks for reading.

 

[9C1Driver]

LOL I remember the days when the KL-40, KL-60, and KL-203 were considered throw away amplifiers. They were so in-expensive unless you could fix it yourself you were money ahead just buying a new one.

 

[doffo]

LOL I remember the days when the KL-40, KL-60, and KL-203 were considered throw away amplifiers. They were so in-expensive unless you could fix it yourself you were money ahead just buying a new one.

I hear ya. I wish I would of bought a few 10 years ago while they were about $50 I think is what I paid for mine.

 

[Shadetree Mechanic]

You can get two for $130, they have a warehouse in California. I have bought from them several times, no issues.

88 Radio HK

HK ORION ELECTRONICS LIMITED

88radio.com

 

[doffo]

You can get two for $130, they have a warehouse in California. I have bought from them several times, no issues.

88 Radio HK

HK ORION ELECTRONICS LIMITED

88radio.com

Nice!! Appreciate the link. On top of having a repair backup plan, I will also have a couple new ones on standby.