Capulin Overdrive
New member
if anybody remembers, i've been messing with a 1987X modded by Dirk Baldringer.
anyways, went to put new tubes in it, and figured out it had a bad screen grid resistor.
replaced the bad resistors and got her fired up, and the thing will try to Red Plate with the amp properly biased up or even bias cold.
amp is also kind of wimpy, as far as volume and really has to be cranked to get it cooking, and then the red plate starts.
figure i'll end up going to a tech, but wouldn't mind trying a little more on my own.
the amp is modded like crazy, so stuff that i'm used to seeing isn't there or isn't were it was atleast. for instance it doesn't have the 5.6k resistors for oscilation on pin 5's of the power sockets. the sockets are grounded, but not with resistors. if it has the 56k resistors for the grid stuff, i can't find them. etc. etc.
thinking it might be Caps or a Cap, but don't know were to start?
anybody got ideas on what i could check on my own?
anyways, went to put new tubes in it, and figured out it had a bad screen grid resistor.
replaced the bad resistors and got her fired up, and the thing will try to Red Plate with the amp properly biased up or even bias cold.
amp is also kind of wimpy, as far as volume and really has to be cranked to get it cooking, and then the red plate starts.
figure i'll end up going to a tech, but wouldn't mind trying a little more on my own.
the amp is modded like crazy, so stuff that i'm used to seeing isn't there or isn't were it was atleast. for instance it doesn't have the 5.6k resistors for oscilation on pin 5's of the power sockets. the sockets are grounded, but not with resistors. if it has the 56k resistors for the grid stuff, i can't find them. etc. etc.
thinking it might be Caps or a Cap, but don't know were to start?
anybody got ideas on what i could check on my own?