Re: Still clicking after replacing eeprom Samsung LE40M87BDX
Just to add my five peneth,The Samsung I encountered did not have any bulging caps as seen in many forums,all the caps were replaced as a mater of course, still relay clicking, I then checked the 10uf and 47uf on the power board they all showed very high ESR one was completely OC, so all caps replaced on power board, still clicking relay, I then noticed there were horizontal flashes between relay switching on and off, looking on the mother board for any clues I noticed a charing of two smd resistors R1131 R1132 68ohm, when replaced with temporary 33 ohm resistor the horizontal flashing stopped, only to be followed with a cloud of smoke from the resistor, the cause of the problem was C1102 a 1uf smd was intermittent S/C , when this was replaced everything returned to normal, good picture no relay tripping, the set was left running for about 4 hours no problem, so it was reassembled and left running, then it started tripping again every 20 seconds, I removed the can on the processor and checked all of the caps in the can,
all were perfectly OK, I then started to check the ESR of the other caps on the main board and found several 100uf with no ESR at all these were replaced still the problem persisted I then checked the 4.7uf near the crystal in the middle of the panel this one had a ESR of 1.2k it was replaced and so far so good.
Just to add my five peneth,The Samsung I encountered did not have any bulging caps as seen in many forums,all the caps were replaced as a mater of course, still relay clicking, I then checked the 10uf and 47uf on the power board they all showed very high ESR one was completely OC, so all caps replaced on power board, still clicking relay, I then noticed there were horizontal flashes between relay switching on and off, looking on the mother board for any clues I noticed a charing of two smd resistors R1131 R1132 68ohm, when replaced with temporary 33 ohm resistor the horizontal flashing stopped, only to be followed with a cloud of smoke from the resistor, the cause of the problem was C1102 a 1uf smd was intermittent S/C , when this was replaced everything returned to normal, good picture no relay tripping, the set was left running for about 4 hours no problem, so it was reassembled and left running, then it started tripping again every 20 seconds, I removed the can on the processor and checked all of the caps in the can,
all were perfectly OK, I then started to check the ESR of the other caps on the main board and found several 100uf with no ESR at all these were replaced still the problem persisted I then checked the 4.7uf near the crystal in the middle of the panel this one had a ESR of 1.2k it was replaced and so far so good.
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