It does go to DFU so I tried DFU revive and restore. Board goes to 20V and draws up to about 100 mA but then back to 0. No shorts on the coils. I replaced U7400 as it was getting hot. That is no longer getting hot but Im guessing it's cpu issue if PM_SLP_SUS_L is unstable? Following the power up sequence that is the first rail that appears to be unstable.
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01958 PM_SLP_SUS_L unstable
- Thread starter grmacs
- Start date
Any history available?
DFU was completed without errors?
L7700 pulses at same time with PM_SLP_SUS_L?
DFU was completed without errors?
L7700 pulses at same time with PM_SLP_SUS_L?
I got an error once during restore but a couple of times it just goes to the lock like its done so I assume it finished but no boot of course. Yes pulses at L7700 that's how I discovered.
Board was liquid damage but not bad. worst areas were Q7065 and that seems to be working and U6500. I checked diode readings of Q7401 because it was near some signs and that seems ok.
Board was liquid damage but not bad. worst areas were Q7065 and that seems to be working and U6500. I checked diode readings of Q7401 because it was near some signs and that seems ok.
No shorts on the coils"
Not always only short is bad.
You should compare values for all power rails with good board, or refference table.
Don't forget Power FETs section (page 66).
Also check diode mode for T2 data lines closer to PPBUS_G3H at J6100.
Any liquid sing on audio board?
Did you test the board alone on the desk?
Not always only short is bad.
You should compare values for all power rails with good board, or refference table.
Don't forget Power FETs section (page 66).
Also check diode mode for T2 data lines closer to PPBUS_G3H at J6100.
Any liquid sing on audio board?
Did you test the board alone on the desk?