| Electronics > Repair |
| SMPS from Marantz UD-5007 defective |
| << < (3/3) |
| Vintagelover:
Hello guys, In the meanwhile I replaced some parts. I replaced ZD507, no effect. I replaced the optocouplers U505 and U502, no effect. I replaced the regulator U503, no effect. Now I don't know anymore what could be the cause. This should be relatively simple, no? Can someone point me in the right direction? |
| mario_nks:
Hello, have you replaced the capacitors yet? CE503 CE502 Then look for a short on the secondary side. Possibly one of the diodes is broken (short circuit) D511 D512 D509 |
| FIXITNOW2003:
also check main cap 100UF 450v |
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