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LC575 caps continuity check.
- Thread starter glay78
- Start date
I have continuity between those two points on mine.
Yup! Thank you. Now I don’t know which is wrong then. I mean the other caps continuity
Which other caps are you investigating?
I’m actually out of idea.
For what it’s worth:
When I placed my multimeter lead on each end of the capacitor (+/-) I discovered several of my newly placed tantalum capacitors appeared to be shorted. I logged the resistance reading for each suspect capacitor. (If a capacitor is not listed below, then the reading was either Kilo or MegaOhm range.)
After removing the newly placed caps, I was very meticulous applying solder mask around the solder pads to prevent inadvertent short circuits.
Happy News, I now have a working LC575 logic board!
Now time to figure out out how to repair the shattered plastics.
— BAMA
When I placed my multimeter lead on each end of the capacitor (+/-) I discovered several of my newly placed tantalum capacitors appeared to be shorted. I logged the resistance reading for each suspect capacitor. (If a capacitor is not listed below, then the reading was either Kilo or MegaOhm range.)
| Location | Initial Resistance following initial recap | Resistance following second recap and solder mask |
| C2 | 0.1 Ohm | Mega Ohms |
| C8 | 0.2 Ohm | 2,200 Ohms |
| C12 | 3.5 Ohms | 1,300 Ohms |
| C13 | 33 Ohms | 1,300 Ohms |
| C15 | 0.1 Ohm | 1,300 Ohms |
| C17 | 0.2 Ohm | Mega Ohms |
| C28 | 0.2 Ohm | 1,300 Ohms |
After removing the newly placed caps, I was very meticulous applying solder mask around the solder pads to prevent inadvertent short circuits.
Happy News, I now have a working LC575 logic board!
Now time to figure out out how to repair the shattered plastics.
— BAMA
