SA212 1975 project
Moderator: Mods
SA212 1975 project
Hi guys,
Managed to acquire this yesterday.. Needs a bit of TLC. (understatement... )
Lots of questions coming probably regarding the missing pieces etc.
Loads of pics in the two links below.
http://s72.photobucket.com/user/philm0l/slideshow/combo
http://s72.photobucket.com/user/philm0l ... /combo%202
Managed to acquire this yesterday.. Needs a bit of TLC. (understatement... )
Lots of questions coming probably regarding the missing pieces etc.
Loads of pics in the two links below.
http://s72.photobucket.com/user/philm0l/slideshow/combo
http://s72.photobucket.com/user/philm0l ... /combo%202
Re: SA212 1975 project
Nice score, albeit a bit abused(!). It's a shame about those valves.
The transformer looks a bit scary.
--mark
The transformer looks a bit scary.
--mark
Re: SA212 1975 project
Yes, its a great shame about the valves... But some you win and some you lose I suppose.
Its on the bench of my local tech at the moment to see how safe it actually is.... I would not have dreamt of switching it on.
(If the transformer looks scary to you Mark, can you imagine what it looked like to a complete novice like me. )
Its on the bench of my local tech at the moment to see how safe it actually is.... I would not have dreamt of switching it on.
(If the transformer looks scary to you Mark, can you imagine what it looked like to a complete novice like me. )
- OldSchoolDave
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Re: SA212 1975 project
But, definitely worthy of a restoration!issmol wrote: Needs a bit of TLC. (understatement... )
Keep us posted on your progress.
Dave
Re: SA212 1975 project
Will do Dave.
It's been stripped back to a bare shell at the moment. Drivers have been cleaned very gently and I have a small hole in one of them that needs a repair before I test them.
The whole cab including the grille cloth needs a good clean and some glue repair to the Tolex.
ie... Lots of cosmetic things I can do whilst I await my techs verdict..
It's been stripped back to a bare shell at the moment. Drivers have been cleaned very gently and I have a small hole in one of them that needs a repair before I test them.
The whole cab including the grille cloth needs a good clean and some glue repair to the Tolex.
ie... Lots of cosmetic things I can do whilst I await my techs verdict..
- teethdream
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Re: SA212 1975 project
Too bad about the tubes. This guys seen a few battles by the looks of it, totally screaming for a restoration. Hopefully your tech gives you a good verdict!
Re: SA212 1975 project
Thanks teethdream.
The Tolex I can hopefully clean up without too much effort and I have some suggestions to help clean off the grille cloth but I could do with some advice regarding cleaning of the internal wiring and components please guys.
After many years of being in a smokey environment everything is caked in a yellow haze which I would like to remove if possible?
The Tolex I can hopefully clean up without too much effort and I have some suggestions to help clean off the grille cloth but I could do with some advice regarding cleaning of the internal wiring and components please guys.
After many years of being in a smokey environment everything is caked in a yellow haze which I would like to remove if possible?
Re: SA212 1975 project
Don't you know that thick nicotine stains add the best tone?
There no easy + safe way to clean the inside components. Maybe a toothbrush and a (very) little warm soapy water -- followed immediately by a thorough dry out.
--mark
There no easy + safe way to clean the inside components. Maybe a toothbrush and a (very) little warm soapy water -- followed immediately by a thorough dry out.
--mark
- Dr.HI-TONE
- Site Admin
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Re: SA212 1975 project
good call Mark,
a toothbrush and a leaf blower to be safe.
I prefer not to use any liquid. That is mojo.....the amp earned it!
a toothbrush and a leaf blower to be safe.
I prefer not to use any liquid. That is mojo.....the amp earned it!
Re: SA212 1975 project
Ha! Ok... ok... I hear you both. I will leave the insides and the smokey tone well alone..
In the great scheme of things I know this isn't important... but I would like to buy the correct replacement carry handle, two chicken head knobs, chassis securing bolts and a replacement rear lower panel.
Any pointers in that direction would be greatly appreciated please gents??
In the great scheme of things I know this isn't important... but I would like to buy the correct replacement carry handle, two chicken head knobs, chassis securing bolts and a replacement rear lower panel.
Any pointers in that direction would be greatly appreciated please gents??
Re: SA212 1975 project
Today = Heat shield cleaned. Valve cans cleaned. Purples loaded into WEM and plastic magnet cap reglued. Grille cloth steamed with a modified Black & Decker wall paper stripper.
Clean photos will be uploaded here.
http://s72.photobucket.com/user/philm0l ... /Combo%203
Clean photos will be uploaded here.
http://s72.photobucket.com/user/philm0l ... /Combo%203
Re: SA212 1975 project
Thought I would give you a quick update guys.
I received the amp back off my local tech over a week ago now and I have been playing it through a 2 x 12 WEM loaded with the Purple fanes. (damned nice it sounds too!)
Still lots to do in terms of recap etc but I thought you might like to see a mod that has now been snipped out by my tech....
Any ideas as to what it would have achieved?
I received the amp back off my local tech over a week ago now and I have been playing it through a 2 x 12 WEM loaded with the Purple fanes. (damned nice it sounds too!)
Still lots to do in terms of recap etc but I thought you might like to see a mod that has now been snipped out by my tech....
Any ideas as to what it would have achieved?
Re: SA212 1975 project
The 1M5 resistor was originally 1M. I'm not sure why one would change that unless the modder empirically determined that the change in voltage made for more clean headroom (or the opposite).
The caps across the Master Volume were put in to reduce brightness.
--mark
The caps across the Master Volume were put in to reduce brightness.
--mark
Re: SA212 1975 project
Thanks Mark, yes the 1M5 was added for more clean headroom as there was a distorted sine wave being produced with the 1M in place apparently.mhuss wrote:The 1M5 resistor was originally 1M. I'm not sure why one would change that unless the modder empirically determined that the change in voltage made for more clean headroom.