Oh it certainly is, but it's a fun project and it's cheap enough to get the PCBs made, I've gotta order a minimum of 5 so I'll have four laying around
Plus, I get to have them printed in matte black so they'll look good even though they go inside of a case haha
Plus, I get to have them printed in matte black so they'll look good even though they go inside of a case haha
Finally finished my A100 awhile back. It's definitely worth pursuing as it's a great sounding amp. I used the uprated pnp/npn T0 3 transistors as advised somewhere else in this thread. I didn't solder straight onto the casing for the collector as it seems like a bad idea. I changed some of the zener diodes for uprated 1w ones as advised elsewhere. Fitted a speaker protection board as this amp has none so it seemed wise. It was also fitted with only one fan, which was worn, so I tracked down two small Ac fans as a replacement. Changed all capacitors and R5 R12 resisters as they are apparently prone to failure. It was a challenge as it's only the 2nd amp I've work on the other being my Sugden a21.
Sorry to piggy back on this thread but am interested in what replacement fans you for and how you connected them? Planning a project and haven't found a solution to this (other than maybe external case fans)