Fender Super Reverb 66

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Fender Super Reverb 66

Postby robg on Thu Oct 27, 2016 5:40 pm

Hi there,

looking for some advice on my Fender Super Reverb 1966. 110v

First off, it sounds great but there are a couple of issues needing looked into.

When I flick the power switch it takes up to 20 secs for the pilot light to come on. I first thought the switch was faulty but it is working fine.
Any ideas why this would happen? When it does power up and warm up there are no issues after that. My concern is that something is on the way out and may do the amp lots of damage when it finally goes.

Secondly, the tremelo is ticking but having just joined this forum there seems to be lots of good advice on this issue.

Thanks for reading and advice greatly received.

Cheers
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Re: Fender Super Reverb 66

Postby stratele52 on Tue Nov 08, 2016 1:16 pm

Pilot light slow;

Contacts dirty on the bulb, and/ or socket. Remove bulb and plug few times this may clean contact. Light sand paper at the end of the bulb
Or you may need a new bulb.
Solder on bulb socket.

Photos may help.

Tremolo ; move some wire close to the photo-resistor may help.
Or put a 0.0022 mfd cap on the 10M resistor connected to the photo-resistor
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Re: Fender Super Reverb 66

Postby robg on Tue Nov 08, 2016 2:18 pm

Hey stratele52,

Thanks for replying - appreciate it.

A pal suggested the same kind of thing as you however as an update it seems to be the whole amp that is really slow to start up.

I threw the power switch and it takes 20 seconds for the tubes to light up - the tubes light at the same time as the pilot light - hence it seems not to be a pilot light issue.

Why would the amp be taking this long to kick into life? No other value amps I've owned do this.

Cheers

Rob
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Re: Fender Super Reverb 66

Postby stratele52 on Tue Nov 08, 2016 9:18 pm

Tubes heaters are always slow than pilot light witch is fast.
What kind ( brand name, model ) of ON/OFF switch did you put

Pictures inside the amp may help, without seeing the amp what we can do ?

Are you able to take some voltage reading or not ?

By the way check the fuse. Check for dirty contacts, look at the fuse older, how knob/ cap is working
And check how many Amps is the fuse .

Many old amp have the wrong fuse
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Re: Fender Super Reverb 66

Postby Dean Jr. on Tue Nov 08, 2016 11:00 pm

Full service is advisable. New electrolytics are advisable, ime.
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Re: Fender Super Reverb 66

Postby stratele52 on Tue Nov 08, 2016 11:57 pm

Dean Jr. wrote:Full service is advisable. New electrolytics are advisable, ime.



If caps check good, no need to replace them.

Our friend must fix the amps first.
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Re: Fender Super Reverb 66

Postby Dean Jr. on Wed Nov 09, 2016 12:11 am

Your opinion.....we all have one. IMe, many problems disappear with new electrolytics and good general service. Over the last 25 years, I have heard too many before and after situation to think that electrolytics this old will let a Fender sound as it should. I do NOT play or work on a Fender of this age and expect it to sound like it should. IF it works, it will sound like an amp with weak electrolytics....and this occurs long before bulging or humming. No test puts an electrolytic under the stress of a circuit at work....just like a tube tester does not show you what a tube will do in the circuit, either.
IF you want a FEnder with a soggy low end, no sparkle in the high end, and a flat sound stage; then play on old electrolytics.
NOT my issue......and no, strattele52, I don't want to be persuaded. You stated your opinion...I stated my experiences.
A neutral party deserves to hear both sides.
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Re: Fender Super Reverb 66

Postby stratele52 on Wed Nov 09, 2016 12:42 am

I just write replace a defective part. If caps, tubes, plugs are defective after you test them, replace them.

Tube tester don't test tubes as they work in a amp. They are not reliable. I alway test my tubes in the amp.
I do same with filter caps.
I'm not the only one who say that.

A well know amp tech;

Recapping . . . the Saga Continues
Filter caps certainly can go bad, and I replace lots of them, but I don't consider it a "must,"
http://www.skipsimmonsamps.com
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Re: Fender Super Reverb 66

Postby robg on Wed Nov 09, 2016 8:22 am

Hi all,

Thanks for posting - interesting reading.

I have not replaced anything on it yet. That said the caps etc have been done on it as I would expect for an amp this age.

The only thing about the switch is that it does not feel positive if the makes senses - it does not click when you throw it. That was my very first thought when I first bought it but then as the amp does eventually come on without having to touch the switch (wiggle it etc) then I thought, this can't be the problem. I will get a new switch fitted anyway as I don't like the feel of it one bit - not sure that is the problem though.

Taking it to an amp tech very soon - if you are interested I'll post back the findings.

Thanks

Rob
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Re: Fender Super Reverb 66

Postby stratele52 on Wed Nov 09, 2016 9:24 am

robg wrote:Hi all,

Thanks for posting - interesting reading.


The only thing about the switch is that it does not feel positive if the makes senses - it does not click when you throw it.

Thanks

Rob



You write on your first post ; :dumass:
" I first thought the switch was faulty but it is working fine."

______________________________________

To me if a amp switch does not click look bad !
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Re: Fender Super Reverb 66

Postby robg on Wed Nov 09, 2016 12:57 pm

:D

Whilst I don't like the feel of the switch it works as the amp switched on. I don't have to do anything to the switch to make it turn on.

I am only replacing the switch because it should be done. As for fault finding it won't be that. Hence my original question about what else do folks think it could be.

Didn't want to muddy the waters is all.

Anyway, hope your head recovers after banging it against the wall :shock:

Rob
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Re: Fender Super Reverb 66

Postby stratele52 on Wed Nov 09, 2016 1:49 pm

Can you by pass the switch with piece of wire or alligator clips ?

You'll see if it is the switch.

Thank, you my head is ok now :laff:
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Re: Fender Super Reverb 66

Postby robg on Mon Nov 14, 2016 3:03 pm

Blimey - this is embarrassing

I got a replacement switch from Watford Valves, soldered it in and the amp lights up straight away.

I'm, an arse, I know! What puzzled me was that it did switch on, eventually without wiggling the switch - hence my concerns about other faults. I should have just started with the simple thing first.

When will I learn..

Sorry from a newbie member.

I'm now going to hide under a rock until my shame has passed.

Rob
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