I need help, if anyone can provide. My usually successful digging around the internet has turned up nothing so far.
I have a Fisher 500T receiver on the bench with distortion issues. The necessary repair is simple enough, except for one thing: ALL the transistors are marked with a Motorola logo, and an "in-house" Fisher part number. I was sure I'd have spares from the working (but cosmetically destroyed) Fisher 440T receiver I had. Unfortunately, the transistor part numbers are different, even though the main driver boards appear to be identical.
Does anyone have any access to old Fisher service info, especially if it is specific to the 500T, that can help me identify these transistors, and hopefully come up with modern equivalents?
Thanks!!!!
I have a Fisher 500T receiver on the bench with distortion issues. The necessary repair is simple enough, except for one thing: ALL the transistors are marked with a Motorola logo, and an "in-house" Fisher part number. I was sure I'd have spares from the working (but cosmetically destroyed) Fisher 440T receiver I had. Unfortunately, the transistor part numbers are different, even though the main driver boards appear to be identical.
Does anyone have any access to old Fisher service info, especially if it is specific to the 500T, that can help me identify these transistors, and hopefully come up with modern equivalents?
Thanks!!!!