SX-980 Restoration #1

[Dan'o]

This is before..above . Repair below

 

[Dan'o]

 

[Motnick]

That’s some serious heat damage to the board. Please check that you didn't break a wire wrap during your capacitor work.

Next. With that amount of heat damage it’s likely that you have a bad solder joint. I suggest that you check over the entire solder side with a strong light and resolder any questionable solder joints. Look for joints that are broken or ringed around the component lead.

It’s nice that you have replaced the capacitors, but that supply really needs an overhaul. If that were on my bench it would be getting all new transistors, rectifiers, and zeners. I do NOT suggest that you replace anymore parts until you have solved your current issues though.

 

[Dan'o]

thank you so much. I tried to find another board with no luck. I will do that and report back.

 

[Motnick]

thank you so much. I tried to find another board with no luck. I will do that and report back.

You can fix what you have.

 

[Dan'o]

Have a question concerning C5 and C6. My board does not have them. Is that a concern?

 

[Motnick]

My unit did not have them either. Did you get your unit working? Did you find a bad solder joint?