danelectro cadet 22

[Solarman]

Greetings, my first post....
I recently aquired a danelectro cadet 22, It only hums when power is put to it. There appears to have some new solder on it. Hmmmm.. I noticed the volume pot has nothing to the center tab, am wondering if this is right? also looks like the tube socket 35 w4 has been resoldered. the tube comes on, but of course as I said, the amp only hums.. I looked for a schematic, no luck as of yet. I also have some pics, but being so new at this I didn't know how to put them on this message. Later when I get better at this I want to show you all my Starfire bass, red, I think it is from 1967, not sure. Thanks for the help, Solarman

 

[Default]

Greetings, my first post....
I recently aquired a danelectro cadet 22, It only hums when power is put to it. There appears to have some new solder on it. Hmmmm.. I noticed the volume pot has nothing to the center tab, am wondering if this is right? also looks like the tube socket 35 w4 has been resoldered. the tube comes on, but of course as I said, the amp only hums.. I looked for a schematic, no luck as of yet. I also have some pics, but being so new at this I didn't know how to put them on this message. Later when I get better at this I want to show you all my Starfire bass, red, I think it is from 1967, not sure. Thanks for the help, Solarman

No, that doesn't sound right at all! Some clear pics of the inside of the chassis would help, also the tube lineup would be useful. This is one of those transformerless amps, so that would be something like 12ax7 - 50c5 - 35w4?
There should be a wire going to the center tab, which is the wiper. One tab should have a wire going to ground.

This one, maybe?

http://www.webphix.com/schematic%20heav ... e_1448.pdf

 

[Solarman]

thanks for the link to the schematic, i am new at this but know enough to not touch it if i don't know what i'm doing. I am a journeyman tool & die guy, my dad rest his soul was the chief engineer here in green bay, wi. public television. he had to study hard to keep up in his field, many times he told me he was an old tube man. I wish he was still here. You are right on with the tubes, I will get some pics as soon as I figure out how to do it. thanks again

 

[RussB]

I am a journeyman tool & die guy,

Me too!

Times are tough here in the northeast. It was once a hub of manufacturing, now good jobs are scarce and there's no new folks getting into the trade. I fear the trade will cease to exist in the next 20 or so years

You'll need to open an account with one of the online picture hosting sites. I use photobucket.com. You upload your pics there, then copy & paste the links here. It's really that easy.

Proceed with caution with that amp. Many folks recommend using an isolation transformer to protect yourself from the shock hazard when playing through those amps. Check out this thread,

http://thegearpage.net/board/showthread ... ight=cadet

 

[fronobulax]

Welcome solarman.

Tell us about your bass here. We can probably tell you more than you want to know about your bass.

Consider adding your name to the list here (but try and keep the post on target, please).

See this for picture posting how to.

Consider reading this thread for a link to Starfire Bass p0rn (mostly full frontal) and a the reason why the collection exists.

See CapnJuan and Default for your amp questions :wink:

 

[Solarman]

Re: danelectro cadet 22 best left alone for now

I see some things are missing on this amp, or I think so. Like the heater transformer for one. What else, I don't know, here is the pic of the board, that is all there is. And you can see nothing to the center tab of the volume pot. I thank you all for the imput, but I am going to leave this alone for a while.

and it seems that these are really big photos, is this right?

 

[capnjuan]

Hi Solarman; this is a link to member ChrisB's LTG thread about his Danelectro Cadet especially the importance of the line / auto-transformer in the 110V circuit.

I see your point about not knowing what might not be there. We might be able to come up with a spec for the heater transformer but without a schematic, I'm not sure anybody would have a way of knowing whether it was all there or not. At least with a jigsaw puzzle, you know how many parts you're supposed to have.

Also, if somebody has played around with it, that would make getting it running that much tougher but ... whatever you want to do!

 

[Solarman]

Hi capnjuan, I am going to take inventory of what is there, and where it is at. At first look the caps all seem to be there. The tubes are right, I have looked at some of the work done on simular amps, down loaded photos, schematics, and text. I will let you know how it is going. This is a good start for me, as I have two Bogen amps that work, but, from what I understand, will sound better and quiet down with new caps, etc....

 

[Default]

There is most likely *not* a filament transformer involved in that amp. The odd voltage on each tube means the filaments are one lone string connecting in series. If one of the heaters goes open, none of the heaters work and you get no sound.

 

[RussB]

Oops! bad info, sorry

 

[capnjuan]

If the Silvertone 1448 schematic applies ... or ... even if it doesn't and the amp has a 12AU6 in it, it needs 12VAC on the filament ... and a step-down transformer. If others are 35W4 and a 50C5, they take 35V and 50V respectively.

Yes solarman ... if that was a question ... just about all old electronics with dated capacitors will be quieter, crisper, and have more bass with fresh caps.

 

[Brad Little]

. We might be able to come up with a spec for the heater transformer but without a schematic, I'm not sure anybody would have a way of knowing whether it was all there or not.

The link sent to the Gear page (http://thegearpage.net/board/showthread ... ight=cadet) has a schematic for a Harmony amp that was supposedly the same only rebranded.
Brad

 

[capnjuan]

... The link sent to the Gear page (http://thegearpage.net/board/showthread ... ight=cadet) has a schematic for a Harmony amp that was supposedly the same only rebranded.

Thanks Brad; that schematic has 12V step-down transformer 'T2' that supports only the 12AU6.