Recent content by lookstoomuch

In hopes this will help someone in the future, I got the amp back from a tech yesterday. Below is the repair he performed: "Find and repair open diode in +/- 3 volt power supply". I brought the schematic which is available for ths amp and he said this particular diode was not on the...

On my DC-2 there is one 4N33 which I have replaced. I also bench tested the LDR's and the one's which came out were OK. As a bit more information, discovered that when I use a guitar with some hotter pickups and turn the volume all the way up, things improve. If I turn the guitar volume back...

One thing I just noticed when messing with the amp, when I turn the gain up on the lead channel, it introduces some distortion artifacts into the rhythym channel. Anyway, frustrating. It's so close and can tell it has a better sound hiding in the amp but can't manage to pin it down.....

Thanks MonstaTone- I did this and there was no difference, when I patched the the Send / Return the rhythym channel sounded the same....."tremelo" and slightly distorted.

As a bit of an update, I have since replaced: - VTL5C9 LDR - 4N33 Optocoupler - Relay 1 & Relay 2 I thought this was certain to resolve it based on typical channel switching issues reported elsewhere and the role these play, however, no luck. To better describe the sound, it is almost a...

And just like that, the issue returned. Looks like I jumped to a conclusion to quickly. Seems to be intermittent and happens when toggling between rhythm / lead. I'll keep hacking away, in the mean time if anybody has any tips....

Well, even though I had replaced all preamp tubes a few years back, decided last night to swap one by one with a new batch I just purchased. After doing the first one (closest to the reverb connections), believe this is V6 the P/I tube, everything cleaned up and the amp sounds great. Guess...

Hi All! New here, and in need of a bit of help. I turned on my studio caliber which sat for a while and all was normal then eventually the Rhythym channel started sound a bit weak / sick almost like a bit of tremelo was applied. I replaced both power tubes with some JJ's and also did the...