View Full Version : SA-7500 = thank you craigslist!


Toka
03-09-2006, 09:34 PM
I was pretty set on just using my Sansui setup for the time being (AU-555A, QS-1, TU-555, SP-200), but I found a very nice looking SA-7500 on craigslist today...$50 later, it was mine! It spent most of the last 20 years in storage, everything appears intact. Got to test it through a pair of old Acoustic Research boxes, sounded niiice. :banana: Few minor problems though:

1. The 'power on' light does not work. Guessing it is a simple bulb fix?

2. Some very minor oxidation on the top near the vents...what works best here? Sanding?

3. Power cord looks a little worse for wear...



All in all, I'm very pleased. It works, and it works very well. At this point it is penciled in as being the power amp between the 555A and the SP-200 pair...if I can find another set of speakers on the cheap it'll work as the 2nd amp in the quad setup. It'll also be a good example for my first tear-down/fix-up (I must confess to being a total newb in this category), so I was hoping for suggestions/advice as to how to bring it back to full operating power...would also like to take a look at a spec sheet (no luck thusfar online). Oh yea, S/N is WD39093730. Glad to join the Pioneer people! :music:

Unican_Eric
03-09-2006, 09:51 PM
I have a SA-7500 that I am using right now as the main integrated in my turntabe system. I love it. Lots of bottom end and silky smooth.
The burnt light is a common problem. My tech fixed mine and said he did something so that it wont blow as fast the next time. beats me what he did though.
As for bringing this puppy back to specs. Start with a good cleaning of all switches and pots with deoxit. Check the bias and dc offset. There is a sticky thread on this and should be good reading.

Good luck. Oh yeah. We need PICS!!!

dew042
03-09-2006, 10:42 PM
Power light should be the very common 8v 50mA - same size as a standard led (thats how I remember it, its the computer geek in me.)

dew

Toka
03-10-2006, 10:00 AM
Cool, I'll try and get some work done on it this weekend...gotta get the lady to take pics, too! It does look really nice, and after further examination (and based on the previous owner) the spots I thought were rust on top might in fact be some sort of paint...seems more 'caked on' than any rust I've ever seen. Not sure though, none of this falls into anything I know much about. Wanna get it nice and shiny either way!

dew042
03-10-2006, 02:15 PM
If used carefully goof off can take off dried paint without hurting the original finish. Longer it stays on the surface, the more likely it is to damage it. Very useful product.

dew.

birddog
03-10-2006, 02:50 PM
Be VERY careful with Goof Off, or OOPS! latex paint remover, it will eat many types of plastics, leaving you with a bigger mess than what you started with!

dew042
03-10-2006, 06:28 PM
Be VERY careful with Goof Off, or OOPS! latex paint remover, it will eat many types of plastics, leaving you with a bigger mess than what you started with!

Yeah - that too. And lettering too. Don't drink it either.

Hell - its dangerous.

dew.

Toka
03-11-2006, 11:03 AM
Duly noted! Glad I read that again. :D As dumb as this sounds, I really don't know if it is paint or rust...seems awfully 'there', yet its a lighter shade of brown than I've ever seen...eh, either way, its gotta go! If it is indeed rust, what best to destroy it with?

dew042
03-11-2006, 02:42 PM
Navel Jelly is the old fashion way - brush on, soak and rinse off -- bye bye rust.

dew.

Toka
03-11-2006, 03:00 PM
Thank you sir!