The Amp Garage

If the +/-16V rails have almost no AC voltage on them (bad filters, resistors or zeners in the LV supply), then: I'd be inclined to look at R89 and R92 - they provide hysteresis to the 4560 being used as a comparator. Or pins 5 and 3 on U3. Then I might think about C48, C45 or C51 Is it JUST the OD ...

Good advice, guys. Thank you.

This is gonna sound stupid. I have a non-reissue Blues Deluxe with a burnt-up low voltage supply that I don't seem to be able to fix and a functioning HRDeluxeIII. I recently bought one of the MonkeyMatic ODS boards to build into one of these chassis. I just can't decide. Do I - move unburnt the BlD...

Stevem wrote:Why make it more than it needs to be, just two 16 volt or so Zener's ?
That circuit has plenty of a Verb even with only 14 volts!

I want to move the heat off the board, and I'd prefer not to have those rails draw more current than they're actually using.

So, I know this problem has been solved to Fender's - and our - satisfaction by fiddling with dropping resistor values and by going to chassis-mount resistors. That didn't make me super happy, because I'm a feature creep. I recently got hold of a Blues Deluxe (not a reissue) that has a big burned ar...

I do the odd repair, and don't mark the parts up - I pay retail, and my client pays exactly that. In this way, the sales tax has been paid, but I don't have to mess with it. At 2 - 3 clients a year, this seems the most practical way.

That Ryan Adams solo is just killer- the kind of thing I hear in my head. Saying volumes in just a few very tasty notes. I'll take that over any shreddy wanking every time. That. On the other hand, only a couple of guitarists can get away with a solo of just one note (of a scale, played multiple ti...

For the money, I'd look at an Ibanez AS-73, -75 or -93. You may have to go through a few to find one that feels 'right', but I've been pretty happy. / I say this as a serial guitar owner who only misses his '83 ES345 (second) that he (stupidly) sold in '90 and saw in 2006 at South Austin Music, tagg...

Damn.

Should have been off the road some years ago.

Still, Damn.

Women are the only reason I bother continuing to breathe. Married - and divorced - a Texas girl. It was never very good. Married a Charlotte girl who fits me perfectly. The three most wonderful things she ever said to me were, "Yes," "Oh, go buy a guitar," and "Oh, go buy a Miata." It's been ten yea...

Like Gingertube said, but wire direct to as close to the pin as you can get. There's a line of Oranges that tried to use a string of connectors on a twisted pair, and those just did not work.

Just snagged a 120:12/6V@450mA transformer for $1.29 and a 12.6/6.3@3A one for $1.76

Y'all might want to drop in and pick over the leavings for other useful items.

Just want to mention - that 205W rating is true only if you keep the junction at 25C while you do it. The line in the datasheet R[theta]ja tells you that, without a heatsink, you'll pick up 62.5C per watt dissipated. You get to take the junction to 150, so 150-25 = 125. 125/62.5 is TWO watts. With a...

ifixit.com sells a basic toolkit with a bunch of the odd little driver heads and a compartmented tray for the zillion different sizes and lengths of screw that tend to be involved. Also - if you do take out a heatsink, re-grease the thing before re-installing. Clean off the old gunk and put a rice-g...

Yup - a cap.
ELectrolYTic
100V
10u seems a good guess, but over the 60 years or so it may have degraded from some even higher value. I think it looks too small to be higher than 47u, though.