No, sadly, I can't get anything other than the heading. I'm not sure how useful it would be to know the total running time and number of starts. Although it's 11 years old it hasn't been used very much. It was at my holiday flat, which is occupied 25% of the time at the most. [I've now got it back at my main home to try to fix it].
The service menu may also be where you calibrate the colour response of the screen. So you don't really want to randomly mess with bits of it you don't understand if you ever get it to appear.
Agreed!
If you can find a model number of the board, you could try searching for that along with "board view". There may be a PDF layout of the board, or even a proper board view file designed to be loaded into board view software.
Failing that, a big illuminated magnifier!
Not sure - EMERGENCY_SOS is down as 13 flashes (not 10) rather than a continuous flash.
You might have to trace them from the nearest IC that is labelled. For example TP5405 (SUB5V) is from pin 3 of IC5405, which the Conductor Views section shows labelled in quadrant 1D of the A-board.
Theo
Take a photo of the board and blow it up.
I've now found all but one of the testpoints (without any explosions!) and will tabulate the results below. They're not marked on the board, but they are shown on a schematic in the repair manual, so I was able to reference them to specific pins of connectors.
Not sure how this will tabulate, but what I found was:
Description Expected Value Measured value
5VS 5.6v +/- 0.25v 5.72v SUB_TNR_6V 5.6v +/- 0.25v 5.72v GND 0 0.1mv INVERTER_SOS 0 78mv P17V 17v +/- 1v 18.35v SUB_F_12V 12v +/- 1v 11.98v INV_ON 2.85v +/- 2% 3.20vThe one I can't find is TV_SOS (which may possibly be the most significant one). It only seems to be on a pin of IC5480, which is on the *underside* of the board and not accessible with the board in place.
Any comments on these voltages?
It looks to me like something isn't drawing any current when it should be hence the high 17V. and the INV_ON is surely wrong.
One possible approach is to change every single electrolytic capacitor in the vicinity of the power supply.
(I have memories as a trained electronic engineer of being highly impressed as to how totally unskilled girls were repairing blown audio power amplifiers. They removed *all* the power transistor and power resistors and replaced them. These were placed in a bin and then tested by a technician on a transistor tester - good ones went back to the repair line as spares. Any boards that didn't work were placed in a box for the technician to diagnose)
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