Apparently my Magnavox MWD-2206 suffered water damage and will not power on. Right now I have to make an assumption as I don't know what the power on sequence is, but it looks like the power supply is working.
I seem to have found a PCB track that should be floating, or at least it should rise to +5V, but stuck at 0.628 volts. It's a pull-down line with a 10K pull-up.
That 0.628 volts is suspicious as it's close to a diode drop. Any ideas on how to debug this?
I found the pullup resistor, and thinking about pulling it out to see how the circuit reacts (and to measure it...) It's a carbon composite resistor it looks like it's fine and highly doubt it value shifted. The wire must have shorted somewhere else, perhaps to the diode, but pulling that resistor might reveal some clues.
I seem to have found a PCB track that should be floating, or at least it should rise to +5V, but stuck at 0.628 volts. It's a pull-down line with a 10K pull-up.
That 0.628 volts is suspicious as it's close to a diode drop. Any ideas on how to debug this?
I found the pullup resistor, and thinking about pulling it out to see how the circuit reacts (and to measure it...) It's a carbon composite resistor it looks like it's fine and highly doubt it value shifted. The wire must have shorted somewhere else, perhaps to the diode, but pulling that resistor might reveal some clues.
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