egemini
Full Member level 2
Hello friends,
I am having a DVD player which is fully dead. On inspecting the power supply, TEA1523P was damaged and it was replaced. All voltages on powersupply PCB on no load are correct.
Upon loading the powersupply with the processor board/DVD decoder board 5V drops to 2.8 and 12V drops to around 6.2V. But on checking the clock frequency on the processor board with a CRO, oscillations can be seen. But the display section and switches are not recognised.
The DVD decoder PCB contains following ICS BA5954FP, AV3169, AV2188, M5705, A290011TL, A428316S, SP3721A, LM393, RC4558, HY29F800ABT-70, HY57V64160HG etc...
Please help me to sort out the problem.
thank you
I am having a DVD player which is fully dead. On inspecting the power supply, TEA1523P was damaged and it was replaced. All voltages on powersupply PCB on no load are correct.
Upon loading the powersupply with the processor board/DVD decoder board 5V drops to 2.8 and 12V drops to around 6.2V. But on checking the clock frequency on the processor board with a CRO, oscillations can be seen. But the display section and switches are not recognised.
The DVD decoder PCB contains following ICS BA5954FP, AV3169, AV2188, M5705, A290011TL, A428316S, SP3721A, LM393, RC4558, HY29F800ABT-70, HY57V64160HG etc...
Please help me to sort out the problem.
thank you