Hi cuda440,
Do the tantalum caps go out of spec also ? I was only replacing the electrolytic caps ?
Thanks
HiTantalums of that era have a tendency to fail spectacularly, sometimes short circuit.
That faceplate is probably done. You'd have to pull it out past straight and let it spring back to straight to get it to stay. It's unlikely you'd be able to do that without damaging it further.
The small blue, drop shaped ones are all tantalum. Get rid of em'Hi
Are the little blue caps on the control amp assembly c1 c2 c23 c24 tantalum ? Or electrolytic?
They have a plus side marked.
I replaced the ones on the amp board c1, c2 with electrolytic
Thanks
Well I missed my October 31 date, but it’s done now !
View attachment 1321502 View attachment 1321503 View attachment 1321504
All electrolytics except for the 2 main ones replaced
I was really proud of myself getting the dial cord rewound correctly, hopefully the rest will be easier
View attachment 1321506
At some point I will have to make a walnut case for it, as both of the cases were pretty bad. A couple of nicks in the top of front panel but looks pretty clean to me. Sounds pretty nice as well !! Not bad for some thing that was headed for the scrap yard.
View attachment 1321516 View attachment 1321517
Thanks for help and following along
No I wished I could have fixed it, but it’s just too badSo, is this the same aluminum face that was bent?
Yea, but it sounds so sweet now, I hate to make any more changesYou should replace those silver can 2SC1451's on the power amp board, they're known for going bad, infact one of the 1451's in my SA-7500 went bad recently best replace them with a pair of KSC3503's, did this in my SX-737 aswell as preventative maintenance.
Yea, but it sounds so sweet now, I hate to make any more changes
Too bad you closed her up. With the age of this receiver, you should replace those cans also. As @Eastham indicated, you should hear an improvement in the lower frequencies once replaced. I have a bunch of extras that may be a match, if you want to change them out.All electrolytics except for the 2 main ones replaced
Too bad you closed her up. With the age of this receiver, you should replace those cans also. As @Eastham indicated, you should hear an improvement in the lower frequencies once replaced. I have a bunch of extras that may be a match, if you want to change them out.
You should replace those silver can 2SC1451's on the power amp board, they're known for going bad, infact one of the 1451's in my SA-7500 went bad recently best replace them with a pair of KSC3503's, did this in my SX-737 aswell as preventative maintenance.