Recent content by Heggy

Sorry for not responding sooner. After replacing the IC and the transistor, the amp went haywire, no sound lights on on front panel, nothing worked. And the fan was still running full tilt. So I put it on a bench b4 I smashed it with a sludge hammer. Months later I gave it to a co-worker...

I finally got around to getting the parts (Christmas time...) and replaced Q16 and R61. Put the power transformer and board back in and plugged it in. The fan still is running at full and now the EQ IN/OUT SW has no effect (equalizer is always ON). In addition the amp seems to sputter every...

Jerrold, Your swift reply is greatly appreciated. I finally did find TS1 by tracing the PCB from R73. As you say it is hiding in the MOSFET heat sink! TS1 and the fan wiring look to be in factory original condition, however there seems to be signs of overheat (solder joints) on Q16 and...

Howdy, I just picked up a SVT 3 PRO and it had some issues. I have fixed 2 of them (broken EQ sliders and a bad tube) I calibrated the bias and plugged her in, sounds fantastic, except the fan runs full blast. I was looking at the board to see if there were any signs of damaged components...

Hi, I am new to this form as a user, however I have been reading the great posts with lots of info for a number of years. Thank you to all who contribute their knowledge and experience! I read earlier on in this post where someone said that the bias pot is very touchy and that...