Thanks so much for this video! I have a ground that came lose from the chassis and I could not get the chassis hot enough to re-solder. Will be getting a lug and screw to attach it!
With that camo hat, its kinda reminding me of that hot southern chick thats been popular on YT lately. Comon' Colleeeen, show us how to noodle fir catfish in yur next vidyo.
Love amp repair videos ... always learn something! You might be interested in an amplifier chassis stand from Mojotone. Available via their amp shop, under tools and supplies. It's adjustable in width and can be rotated to give you a good working angle. Might be able to get a woodworker friend to build you one much cheaper and maybe better.
Another great video! I really enjoy your videos and always learn new things. It’s interesting to see some of the differences between the original wiring paths and the reissue. It makes sense they use a fully board-based approach in the reissue, but clearly they lost some robustness and ease of maintenance by doing that. Thanks Colleen!
Nice video.....every since I built my marshall clone amp with iskra resistors and mustard capacitors I have been addicted to these kinds of videos and learning everything about tube amp circuits.....I couldn't make up my mind between a plexi 1959 model or a master volume 2203 model so I modded it for both and even threw in the jose arredondo mod.....I love it
Fascinating stuff, I could watch this for hours. But most of it sounds like Chinese to me. Thank God there are smart people like her to fix up our broken amps.
Great timely video! I need to replace the filter caps on a Pro Junior but can only get them in 500v, the originals are 450v. I take it that’s ok to do?
Great video kid. I watched and listened attentively and learned a couple of new things. Who says ya can't teach an old dog a new trick! I liked that idea of moving the screen resistors onto the tube sockets. Ya know, I have cleaned up a few of these r.i. amps, particularly the Twin Reverbs by dressing up the wiring harness. I dislike the plug in ribbon cables. These are especially a troublesome part on BluesJR. I like the idea of moving those filament gnd balance resistors too! I have often heard that it not good idea to use standard home based hardware store types of rtv silicone adhesives in amplifiers due to the outgassing of acetic acid. It supposedly will continue to forever gas inside of a confined hot amplifier and will cause corrosion. I am unsure how huge an issue this really is,, alit probably depends on each h brands chemistry. The one to use is an Owen's Corning Formulation like the kind used for fish aquariums. I often will just use high temp hot melt glue. I always liked how SLM/Crate actually include a notation in their service layout illustrations included with schematics and call it out as "goop". Showing a balloon type line drawing around the components where the goop is present. Lol! Yeah these Fender Reissues, ya gotta love em or hate them. I hate the way that they detract attention and often obscure the value of true vintage amps. Thanks for video. BtW.... so what was the final deal with that output xfmr issue with that Marshall?
I think the cardboard around the jacks is a safety compliance thing to stop anyone from pushing a screwdriver into the jack and touch any high voltage points inside the chassis. IC caps are absolutely lousy, I always use F&T psu caps, tube amp doctor seem to be pretty good aa well.
That is not an amplifier; it’s a work of art. Great sound too. Love that vibrato. Nice playing too. The grille cutout reminds me of some Kendrick amps from many years ago that had a similar design. By the way, may Gerald Weber (founder of Kendrick amps) rest in peace; he passed away not long ago.
I'm not sure Illinois Capacitor (the original, bad caps in this amp) even make their own stuff anymore? The PCB in here appears to be dated the 49th week of 2010, and the capacitors aren't too close to the tubes… Personally I've always trusted the Japanese electrolytics most (barring a few bad series, notably Nippon Chemi-Con KZG and KZJ as used on PC mainboards of the 2000s, and early surface-mount electrolytics which were poorly sealed regardless of make), but they don't make axial types anymore so I'll keep F&T in mind for those.
Old Solder. That's a perfect touch of whimsy for tube amps. Tube amps are my home and gig gear. Yes... Fender. Princeton and a De Ville 210. And the pragmatic relocation of the screen resistors, the upgrade caps? If I weren't in the midwest my gear would be on your waiting list! Thanks!
First time seeing your channel. Your knowledge attitude and amp work is top notch. Forgive me but a young woman who can service amps apart from being a musician is a powerful combination of attributes. Keep up the great work! Accept my sub in appreciation of your work and sharing.
The cardboard is called fish paper is probably treated with something to make it fireproof. I think its use was as an insulator to shield either heat or RF from other stages.
RF shields have to be conductive, so it can't be that. It's probably meant for safety, but I'd rather have a solid plastic barrier than some flimsy cardboard…
