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SurfGuitar101 Forums » Gear »

Permalink Educate me on Bandmasters

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I can't really see the ground switch clearly enough to see whether there's still a capacitor hooked to it. If there is, I believe you can just clip it out if you're concerned - or de-solder it if you'd like to keep the original component intact.

Apart from the two large, orange caps everything looks pretty original. Electrolytics should be changed periodically anyway, so that's no bad thing.

Things looks ok at first glance.

Nice score! I recorded this with my BF Bandmaster.

The Kahuna Kings

https://www.facebook.com/pages/The-Kahuna-Kings/459752090818447

https://thekahunakings.bandcamp.com/releases

Congrats SSS!!! Glad you finally found one, she looks good!

Thanks for taking a look at it guys, I appreciate it. I probably paid a little too much for it, but I got tired of looking and just decided to buy one that appeared to be in good condition.

Josh, are you saying I can get electrocuted from touching the bottom side of the chassis? I am extremely careful when I swap cabinets, and try not to touch anything that may electrocute me. I appreciate the heads up.

Guitar player for the Driptones surf band.
https://www.driptones.com/

Next to the transformers on the bottom side of chassis, there is a big metal bump. Under it are a bunch of electrolytic caps. Those can keep a charge, so just be careful if you remove that cover. That’s all.

If it works and sounds good and you’re happy with it, you didn’t over pay.

Welcome to the Blackface Bandmaster club (of which I am also a proud member). Cheers!

Assuming the chassis is made properly and grounded, touching the metal won't hurt you. Josh is referring to the contents of the 'cap pan', a metal bulge on the bottom of the chassis (next to the transformers and valve sockets) that contains a handful of high-voltage, high-capacity capacitors that can hold a deadly charge for a long time. Often, a tech servicing an amp like this will add 'bleeder resistors' to drain those capacitors to safe voltages within 30s of powering off but the amp would not have originally shipped with them, so they may well not be present. I'm sure as hell going to add them to my Showman clone. Either way, never touch the contents of the cap pan without carefully testing the voltage across the caps first to ensure it's below 60V.

The price with shipping is not unreasonable if it has had all the updates such as the electrolytic caps.

The Kahuna Kings

https://www.facebook.com/pages/The-Kahuna-Kings/459752090818447

https://thekahunakings.bandcamp.com/releases

Thanks for the information guys. I am having Peter Mather build me a blonde cabinet for it, but now I am very concerned about swapping it myself. I think I will take it to a professional and let him do it for me. Uh-Oh

Guitar player for the Driptones surf band.
https://www.driptones.com/

If you're just sliding the chassis out of one cabinet and into another, you'd have to screw up very impressively to volt yourself. If the metal was electrified, you'd die every time you touched the front panel! Don't get yourself too worked up, ok? It's if you're touching the electronics that you need to be very careful.

Still, while it's with the professional, get them to double check the ground switch death cap is gone, the cord ground is properly connected and that the electrolytics are in good shape. Better safe than sorry.

I admit I do get a little over worked up sometimes, that is one of the things I struggle with having OCD. It's an awful disorder, but I am getting help with it. Anyway, I am making a list for the tech to address.

  1. Make sure it is 4 ohms.
  2. Remove death cap (if present).
  3. Add bleeder resistors.
  4. Cord ground properly connected.
  5. Electrolytics in good shape.

Anything else you can think of, let me know. Thanks again for all your help.

Guitar player for the Driptones surf band.
https://www.driptones.com/

Last edited: Mar 30, 2018 11:56:55

SixStringSurfer wrote:

I admit I do get a little over worked up sometimes, that is one of the things I struggle with having OCD. It's an awful disorder, but I am getting help with it.

I can't empathise, but I sympathise! Long term health issues are a pain. It can be very hard to decide to get help for mental health issues - and no less hard to actually get the help once you've accepted the need. Good on you for managing both. Smile

  1. Make sure it is 4 ohms.
  2. Remove death cap (if present).
  3. Add bleeder resistors.
  4. Cord ground properly connected.
  5. Electrolytics in good shape.

Anything else you can think of, let me know.

That's about the list. Bleeder resistors make it safer to touch, the DC, cord ground and electrolytic check make it safe to play, and the transformer matching will make you have the best sound.

Thanks again for all your help.

You're welcome. We don't want you fried, but it's easy to get these little things resolved once you know what needs to be done. Smile

You can kill any voltage for a cab swap by plugging in the speaker cab and shutting down just the main power and leave the standby on. You will drain off remaining voltage enough to unscrew it and pull the chassis and put it in your new cab!

The Kahuna Kings

https://www.facebook.com/pages/The-Kahuna-Kings/459752090818447

https://thekahunakings.bandcamp.com/releases

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