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FDP Forum / Amp Mods, Repairs, and Projects / Time for a ‘65 TRRI tune up

bluzcat
Contributing Member
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Eastun' Carolina

Like Ringo, I'm happy to be here!
Apr 7th, 2019 06:10 PM   Edit   Profile  

I play one at church and notice lately that it breaks up pretty crunchy on 3.5-4 on the volume. This is using a Strat, Tele or Rick 620. Everything I’ve read says this should not be, and I don’t recall it happening before. I normally play on about 3 or 4 for the space we have. I believe it’s a 2005, and I got it used. Has the original white label Groove Tubes 6L6s and I’m going to assume original caps, so it’s time for a cap job and maybe new tubes? Any other thoughts?

Forgot to add I play in channel 2 and I’m running a 5751 there.

(This message was last edited by bluzcat at 08:27 PM, Apr 7th, 2019)

Peegoo
Contributing Member
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Just beyond Mars

there's a world of fools
Apr 9th, 2019 02:20 PM   Edit   Profile  

If it's breaking up super early, probably needs new tubes.

If it sounds farty and lifeless, that's leaky caps.

Big Joe

USA

Apr 9th, 2019 06:08 PM   Edit   Profile  

I play my ‘95 TRRI on 6 in Church and it remains super clean with no hint of break up. Something is up.. I agree to check out power tubes.

bluzcat
Contributing Member
*********

Eastun' Carolina

Like Ringo, I'm happy to be here!
Apr 10th, 2019 06:14 AM   Edit   Profile  

Thanks guys will look at the tubes first. Since the caps are pushing 15 years old, would it be a good idea to replace them?

Big Joe

USA

Apr 10th, 2019 07:24 AM   Edit   Profile  

I had to replace my caps after 15 years..that’s definitely another possibility given your symptoms.

bluzcat
Contributing Member
*********

Eastun' Carolina

Like Ringo, I'm happy to be here!
Jun 8th, 2019 01:25 PM   Edit   Profile  

Went into the chassis today and found the radial 100v 100uf bias cap had two cold solder joints. While I'm here I might as well replace, but can only find radial ones at Mouser, while the axial filter caps are at Amplified Parts etc. Any issue replacing with an axial and laying it over?

pdf64

UK

Jun 18th, 2019 03:28 AM   Edit   Profile  

That's ok by me but keep its own and other leads / components away from the cap body, as the can will be connected to its negative lead.
Glue it to the board too, hot melt glue / rubber solution etc, not regular silicone goop (releases acidic fumes as it cures).


Leftee
Contributing Member
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VA

The Escalator
Jun 18th, 2019 08:38 AM   Edit   Profile  

To expound on what Peter said...

If it smells like vinegar out of the tube, do not use.

bluzcat
Contributing Member
*********

Eastun' Carolina

Like Ringo, I'm happy to be here!
Jun 18th, 2019 09:06 AM   Edit   Profile  

I decided to replace all of the electrolytics so ordered a radial. Just waiting on all of the parts to come in. The fun part is labeling all of the wires that need to be disconnected in order to flip the pcb board!

FDP Forum / Amp Mods, Repairs, and Projects / Time for a ‘65 TRRI tune up




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