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Initially Randall Smith was taking Princetons, gutting them out and building a 4x10 Bassman circuit. He was getting the transformers from Fender. Fender got hip to what he was doing and quit selling him the Bassman trannys. He then began to build his own transformers. As far as I know Boogie...

I've got a diagram of the light bulb current limiter that I got off the net a couple days ago. I think you monitor the voltage, but I am not sure. I was reading it today, but haven't found "that" webpage again. If you want to send the info to my email address it's: [email protected]. Boogie...

Here's a link that supports Stokes' position: http://www.harpamps.com/micKcaps/Forming-Capacitors.html Boogie On...dv

Yeah, once again your points, "Do you know when the caps you are buying were manufactured?How long they were sitting on the sellers shelf?" are TOTALLY VALID. Your method is failsafe. I don't have a vari-ac, tho I could probably take the amp into one of several music/repair shops here in Austin...

Stokes, please don't think that I am dissing you,.You are totally knowledgeable on the subject of guitar amps and have way more knowledge than I do. I truly appreciate the info you have presented in this forum. Regarding the question of forming the filter caps, here is what Jon from...

UhOh...The 2- 47uf63V caps on the psb are high temp capsrated at 105*. the replacements I got are rated at 85*. should I stick with what I've got or order the high temp caps? thanks ... dv

I had an idea that they were in circuit. I'm going to leave them alone..I buy my 6L6's from Boogie anyway. 14 amps! that"s gotta be close to being in HEAVEN!!! The FedX man just dropped off the caps I ordered from Mouser YESTERDAY! Time to heat up the iron. thanks...Boogie On...dv

Let 'em blow, I pulled them out of the amp already! I'm not sure about a couple resistors: (1/4 0r 1/2 watt) on the psb. one is supposed to read 22k (red/red/orange). It's reads 5.17k. Also the 6.8k (blue/silver/red) resistor right next to it ( they are connected on one end) is reading the...

:D side note: 2 of the 3- 30uf/500 caps on the psb are seriously bulging on the + end... Boogie On... dv

Thanks Stokes.. There is a large 1 or 2 watt 680 ohm resistor that was almost touching the cap. Also the cap is darker brown on the end closest to the resistor. The boards are all cleaned up, I've checked most of the resistors, cailubed the pots, deoxited the jacks....Now it's time to relax a...

I've found a sprague orange drop cap running parallel with a resistor that is next to the 4th preamp tube socket (called the gain boost footswitch circut on the schematic) that has turned brown but doesn't look disfigured and is not leaking. the value is sprague 715P .005-400V. As far as I can...

there are 2/ 47uf63v on the powersupplyboard, 1/ 470uf16v on the preamp board, 2 /220uf63v and 2 /10uf63v on what I think is the graphic eq board (it's mounted on the side of the chassis, near the input.

I have a 1984 Mark IIC+ that I bought direct from Mesa. all I can tell you is that the transformers you mentioned are original. The 60-162xx3 EIxxx325 in my amp also has "Mesa" stamped into it above the #'s

I went ahead and got the F&T 220's. About $3 more a cap. Mouser.com had the rest of the smaller caps & a high ohm power resistor for about $9 including shipping. I'll post when the amp is done. thanks dv

thetubestore.com doesn't have that great of a selection of caps, none of the smaller 7 caps, but apparently the price is good on what they do have. The caps on this power supply board are 47uf/63V if I'm not mistaken. They are the only other caps on the psb besides the 220's and 30's.. I've been...

That's what I'll do then! Thanks again for the info...dv

Thanks, I did some checking yesterday and found a couple IC 220uf 300V's and 4 Atom 30uf 500V's at thetubestore.com for $44.85 with shipping. I count another 7 electrolytics in various places. I also want to change out the cathode bypass caps, but I am kind of having a hard time identifying...

Thanks - will do Monday when they are back in the shop....... dv

:D Hi All, I have a Mark II C+ which I bought NEW from the factory in 1984. It's a Blond / wheat Super Sixty combo with graphic and 'verb with a 150w Black Shadow. I also bought the road casewhich has kept "The Amp" looking showroom clean, near mint condition! It's time to replace the filter...