Fender Twin Reverb Amp - Repair, Recap and Restore - Part 1 of 2

[@Bbendfender]

This gentleman is properly trained and knows what he is doing.

[@IronandWire]

Opens dog house and touches filter caps without discharging. LOL

[@deerfish3000]

@ 13:30 the technical name for those whiskers is dendrites. They can form when certain types of metal start to corrode. They can especially reak havoc in an electronic circuit by shorting out everything in its path.

[@retrotechandelectronics]

Thanks for sharing, funny only one was so effected. all of those pots are really past their prime though.

[@nugnugreturns]

hey, I noticed my bassman has pots with these dendrites (though not as severe). how would u recommend I clean them?

[@dhpbear2]

6:45- where is the other end of the black lead connected to?

[@retrotechandelectronics]

Black is tied to the red lead going to the left side of the capacitor, just out of frame

[@jongibsonOO]

Awesome Video Retro Tech & Electronics!

[@retrotechandelectronics]

Thanks!

[@MuscleDad420]

If those grid stopper resistors need changing in old Fenders I never use carbon comp. The heat rises up into the chassis and they are going to take a beating just like the originals. Metal film is quieter and less sensitive to heat degradation, as I'm sure you know. Purists be damned. Great work!

[@retrotechandelectronics]

You would be surprised, though in many cases I upgrade the materials there ae cases where there is an insistence on the original parts, which from a collector perspective can be understandable.

[@dhpbear2]

13:34 - It looks *magnetized* !

[@shektek]

Thanks for this! One just like it just landed in my shop, awesomely unmolested! What a treat Question: you replaced the 50 MFD bias supply cap with a 100. Schematic indicates it should be a 25. any other considerations or concerns around making this change?

[@retrotechandelectronics]

That cap upgraded is the only universally recommended change for original amps coming in for a recap job or repair.

[@celsomaciel1974]

Hello! How many watts Rms does each speaker resist?

[@retrotechandelectronics]

Depends on how the tubes are biased.

[@celsomaciel1974]

@@retrotechandelectronics I edited my question. it would be how many watts each resists. Thank you.

[@JHarrison49]

I have this same amp and i'm thinking of getting new capacitors for it. Is it an expensive fix to replace them? also what are some of the symptoms of bad filter caps?

[@retrotechandelectronics]

If you dont know how to do it, have someone else do it. Its not worth dying over...

[@JHarrison49]

@@retrotechandelectronics I would never attempt to install caps myself since i don't have the know how or knowledge to do so. I just wanted to know what i'd be up against in regards to price for the parts needed.

[@pythonflying]

@@JHarrison49 Typical, never an answer to the questions. Just watch Lee Jacksons videos.

[@Dustyfingers]

What temperature do you run your iron?

[@RyanReadyMusic]

You are smart as hell!!

[@retrotechandelectronics]

You too!

[@MultiZaphod]

Phillips made tubes(Mullard, Amperex etc.) almost always flash on startup. Not a sign of a bad tube.

[@retrotechandelectronics]

A startup flash is never a good thing for longevity. Thermistors can help...

[@billyespeche]

excellent

[@retrotechandelectronics]

Thanks!

[@cgavin1]

If that was a guitar I'd say it was fake. Do you think that thing has just been stored in a giant tupperware or something for 50+ years?

[@retrotechandelectronics]

This is what collector amps look like.

[@cgavin1]

@@retrotechandelectronics I can see why they fetch big bucks. I'm not sure I appreciate why people care so much about how it looks (vs how it sounds) but each to their own. :)

[@Kookamungawerewolf]

Don’t throw up on the bench!🤮 Good God, what a mess that would be.🤢

[@johnsimms3957]

Please leave the music off of your videos.

[@retrotechandelectronics]

No. Let me know if there was a anything else you need.

[@nathanmontover1436]

@@retrotechandelectronics well done!