02-25-2019, 05:46 PM
Hi Ron - yes, I am doing more reading on the 500C. There is quite a lot of info, and many experts and project examples out there on the web, although it is a bit scattered.
What I am picking up is, aside from the usual capacitor suspects and mods to the bias circuit, the output stage grid resistors are not good values for the tubes that are sold today as 7591 replacements. I'll definitely look in to that area.
I'll do the "easy" jobs first, which will help me get familiar with the chassis. Getting "hands-on" with a piece of gear also provides the motivation to do the background reading, since it is possible to visualise the circuit and component layout. That in turn aids one's understanding of the repairs and mods done by others.
Regards,
Ed
What I am picking up is, aside from the usual capacitor suspects and mods to the bias circuit, the output stage grid resistors are not good values for the tubes that are sold today as 7591 replacements. I'll definitely look in to that area.
I'll do the "easy" jobs first, which will help me get familiar with the chassis. Getting "hands-on" with a piece of gear also provides the motivation to do the background reading, since it is possible to visualise the circuit and component layout. That in turn aids one's understanding of the repairs and mods done by others.
Regards,
Ed
I don't hold with furniture that talks.
