Hi,
I am planning to re-cap my Adcom GPF-565 preamp, all the electrolytic capacitor was taken out, testing them with a component tester and a MESR-100 ESR tester, all seems to be good but I notice something that I think might not be a good sign as shown on the attached pictures.
A few of them seems to have liquid coming out from the bottom of the cap and some of the contacts have signs of corrosion.
Please advise and sorry for my poor English.
I am planning to re-cap my Adcom GPF-565 preamp, all the electrolytic capacitor was taken out, testing them with a component tester and a MESR-100 ESR tester, all seems to be good but I notice something that I think might not be a good sign as shown on the attached pictures.
A few of them seems to have liquid coming out from the bottom of the cap and some of the contacts have signs of corrosion.
Please advise and sorry for my poor English.
Attachments
If leaking, discard them and clean the board. Use only quality parts like Nichicon from an authorized distributor.
If compatible with the board, you could increase the voltage rating upward to the next level.
Be careful to observe correct polarity. Be aware that sometimes the silk screen on the board can be wrong.
Carefully verify the proper installation polarity with a photo of the inside. Looks like the negative sides
all face toward the front panel.
If compatible with the board, you could increase the voltage rating upward to the next level.
Be careful to observe correct polarity. Be aware that sometimes the silk screen on the board can be wrong.
Carefully verify the proper installation polarity with a photo of the inside. Looks like the negative sides
all face toward the front panel.
It definitely can be a glue. And the same glue could cause small corrosion. So, I would just measure them (capacitance, ESR, leakage), and they are likely fine. So you just have to clean them and possibly PCB, and resolder back to the place.