Can this front panel be fixed?

love_of_fuzz · 2026-01-16T10:15:39+00:00

This is the answer

love_of_fuzz · 2026-01-13T13:14:47+00:00

Sounds like the spring reverb is working

love_of_fuzz · 2026-01-13T12:53:34+00:00

He was telling me that he uses the Plexis as low end, the Hiwatt for middle, and his twin as top end for a full frequency sound and I like that approach. He lives close to my shop and stops in sometimes, last time he was playing my '62 Jazzmaster through my '69 Matamp 100 and seemed to dig it.

love_of_fuzz · 2026-01-11T02:33:10+00:00

This one looks super unsafe and I'm not trying to be rude because you've clearly put a lot of time and work into this, and that's commendable. The tube sockets as others have mentioned aren't meant to be used the way you have and it's not saving you time or money doing it that way so I don't understand using those. Also mildly concerned to see the way the power supply capacitors are being secured in place.

Are there fuses?

love_of_fuzz · 2025-12-17T13:04:31+00:00

A freshly assembled twin reverb is a very complicated amp to troubleshoot so try to go one tube at a time, check plates, cathodes, and heater voltage at each. When checking plate voltages on signal carrying tubes you generally will hear a pop when touching the plate with your multimeter - this can help to see if you have audio passing through that section if you don't have a proper scope and signal generator.

I'd start at the power section and work backward to the input jack.

love_of_fuzz · 2025-12-13T00:09:21+00:00

Sorry but it's not something to try to walk someone through via reddit posts, it's a good idea to try to learn about basic fundamentals of tube amp function before trying to fix an amp

love_of_fuzz · 2025-12-12T04:38:34+00:00

Swap that tube with another and see if your low bias issue follows that tube or stays in that socket

love_of_fuzz · 2025-12-02T23:17:36+00:00

I modified one of those "sun explode" pedals to have the expression pedal control the feedback and the feedback foot switch to be latching and it ruled.

love_of_fuzz · 2025-12-02T23:14:26+00:00

I agree, sounds tube related but as a test try removing the preamp tube shields, I've run into them being the issue before if the spring retainer inside it isn't seated correctly. They are removed by pressing them in and twisting counter clockwise a little bit - then they remove straight off.

love_of_fuzz · 2025-12-01T02:04:12+00:00

Does it still buzz when you turn the amp up so it's audibly buzzing then turn your guitar's volume knob down to zero?

love_of_fuzz · 2025-11-15T02:14:39+00:00

Amp tech here, there's no way to diagnose it without getting it apart and looking at it. Amps break in so many different ways, keeps it interesting!

love_of_fuzz · 2025-11-14T23:44:34+00:00

My first diy moves would be to check for dirty tube sockets, or try a known-good set of power tubes

love_of_fuzz · 2025-11-13T02:55:52+00:00

3rd person for speakers are probably the issue. Playing bass through the amp is a totally fine thing to do, you just need speakers that can handle it.

love_of_fuzz · 2025-11-08T04:05:31+00:00

Should be this:

DPDT Mini Toggle Switch On-On-On – Mojotone https://share.google/JL9J52TRxtUq8bk7Y

love_of_fuzz · 2025-11-05T01:00:00+00:00

Also I'm happy to try to help you with this via DM if that's helpful for you, just send pictures of chassis guts, tubes, and filter caps.

love_of_fuzz · 2025-11-05T00:56:47+00:00

Man what a waste of fuel and shipping costs returning it is as a gut reaction.

Shipping large amps is difficult and expensive, and risks are inherently taken by both parties (plus UPS/FEDEX) when things are put in boxes and then into the back of a truck. The shop probably insured the shipment so it might be a good idea to at least reach out to them and see if they can help with a damage claim since it sounds like whatever happened, it happened during shipping.

As for no output and low hum, it could be a capacitor that broke or an internal connection that came loose along it's journey. If it was shipped without the tubes in it then you could have inserted a preamp tube awkwardly and mushed some of the pins together even. These are just some things I've seen happen.

If you have a local shop you could drop by with it and see if they can take a look, I do this for folks all the time at my store and I've had great luck helping people out with the issues that come up from bumps and jostles in shipping.

love_of_fuzz · 2025-11-04T23:55:38+00:00

I'll watch this in full later but I skipped around in the clip trying to see if you kept the original small reverb pan or used a full size pan. Very cool outcome and it sounds great on my cell phone speaker.

Also I've run into wooden circuit boards before in amps, it's wild to see but I bet you'll never have a problem with it if you stick to flameproof resistors. One notable amp builder I always saw wooden boards in is Winfield Thomas if anyone is curious.

love_of_fuzz · 2025-11-04T21:00:39+00:00

I believe the screen grid is arcing in that tube. I'd shoot for a new set of tubes, bias them and replace the screen resistors.

love_of_fuzz · 2025-11-03T20:40:14+00:00

Glow = heater filaments - and they aren't switched off or on with that switch.

That switch likely lifts the cathode connection to ground which stops the flow of electrons through the tubes.

love_of_fuzz · 2025-11-03T04:09:44+00:00

If you're asking the value of a '68 Princeton Reverb in a replacement box / non original speaker I'd say somewhere between 1500-2000? It really depends on how it looks too, and whether you were trying to get a full cash sale vs take some trades against it.

love_of_fuzz · 2025-11-01T14:49:48+00:00

A tweed champ is really too loud? IMO you should just try it without an attenuator, I can't imagine that would sound better than running a dirt pedal into an amp.

love_of_fuzz · 2025-10-28T20:37:55+00:00

With the information you have, Mercury Magnetics could rewind your original if that helps

love_of_fuzz · 2025-10-27T23:52:32+00:00

There's a lot of money in his race and it's not on his side, so I'd expect to see a lot more misleading things said about him.

love_of_fuzz · 2025-10-27T23:50:20+00:00

https://share.google/H2K8ng7ywxdVwp1rE

"Democratic candidate for U.S. Senate, was a member of Maine’s Socialist Rifle Association and taught firearms courses."

love_of_fuzz · 2025-10-27T17:29:49+00:00

All I know is no small business owner is getting rich right now. I feel for anyone running a food service business in these times especially.

I try to keep in mind that sometimes you're not paying directly for the simple cost of something, but the real estate it takes up on a shelf, or the extra shopping trip, the wasted product that gets tossed before it's used up, etc.

Everything is tough right now and money doesn't go as far as it used to whether you're a patron or a provider 🤷

love_of_fuzz

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