quadra 660 recap

[imactheknife]

I recapped both a 575 and a 660av. 575 no issues. 660 worked, but now nothing. Checking over all joints etc. Is it possible to lose grounding? it it dead and not Sure why?

 

[Unknown_K]

Broken solder joint I would think.

 

[imactheknife]

it doesn't chime, light comes on etc. get almost like a humm in the speaker, like it is grounding or something. Still dead. hope it isn't gone..was a nice system

 

[Unknown_K]

Did you check for a short to ground?

 

[imactheknife]

Ok, well i was checking over the board tonight and noticed something loose. Little 223 chip had come off and had electrolyte goo under it. So cleaned up the chip and another one came off. Is this possibly why board is non functional?

 

[imactheknife]

Closer up rp 13, rp 4

 

[Unknown_K]

Are you using a hot air workstation?

 

[imactheknife]

Are you using a hot air workstation?

No, but I will to reattach these guys. How to check for short to ground?

 

[imactheknife]

Can you order these? Or do i have to scrounge from a parts board?

 

[imactheknife]

Well, all is well in this project. Cleaned up those two 223’s, hot aired them back on. Gave the whole board a dip in the vinegar / warm water tank for an hour with some toothbrush scrubs. Gave the board a distilled rinse, and finished off with a week dry out. She works, sound works (didnt before) unless i had headphones in.

 

[Trash80toHP_Mini]

Great to hear all is well and you speaker has come back to life. Nice job.