PeteyWheaty
New Member
I picked up a DVP-S9000es. When I plugged it in, it powered up. It was able to load and eject a disc. It could read the disc and showed on the display. When I tried to play the disc, the unit shut down and wouldn't re-power. I removed the top and visually inspected everything. Everything looks pristine, smells fine, and the fuse is intact.
I've got (at least) 2 issues and some questions. I'm a noob at diagnosing electronics, have done some book learning, and watched a fair amount of Mend it Mark. I've got some basic testing equipment - a multimeter, a digital oscilloscope, a circuit reader, de-soldering and soldering equipment, and a DC variable power supply.
Power
- Using the multimeter (set to ->|-), I began by testing the power cord, and worked my way forward to the power block. Using the multimeter, I checked that there were no shorts in the board, and then tested the power button, which worked as expected.
- There are 2 capacitors on the power board that are ceramic 470PF. 250V. I tested these capacitors in both directions, and the multimeter showed OL. Shouldn't they be directionally open one way and closed the other? I removed one from the board and popped it into the circuit tester, and it showed within spec for PF.
- The power switch also has one of these capacitors, and it has the same behavior. What am I missing?
Diagnostics
- I assume that I should continue to move to the display boards (there are 2). Any suggestions beyond following the flow of current?
I've got (at least) 2 issues and some questions. I'm a noob at diagnosing electronics, have done some book learning, and watched a fair amount of Mend it Mark. I've got some basic testing equipment - a multimeter, a digital oscilloscope, a circuit reader, de-soldering and soldering equipment, and a DC variable power supply.
Power
- Using the multimeter (set to ->|-), I began by testing the power cord, and worked my way forward to the power block. Using the multimeter, I checked that there were no shorts in the board, and then tested the power button, which worked as expected.
- There are 2 capacitors on the power board that are ceramic 470PF. 250V. I tested these capacitors in both directions, and the multimeter showed OL. Shouldn't they be directionally open one way and closed the other? I removed one from the board and popped it into the circuit tester, and it showed within spec for PF.
- The power switch also has one of these capacitors, and it has the same behavior. What am I missing?
Diagnostics
- I assume that I should continue to move to the display boards (there are 2). Any suggestions beyond following the flow of current?
