Hi All,
Just looking at a problem on my CV - no +20 Volts and F107 blowing.
I've had a look on the old pin repair site with regards where to look, what to test (and how), and have just tested the diodes D7 - D22 on the power driver board with the following results...
Testing with the DMM set to diode, all diodes read between 0.65 & 0.83 with the exception of one (D18) that reads zero (in both directions). Now I'm fairly happy that D18 is shot (it buzzes out in both directions also) and that this is the problem with the +20 Volts, but I'm not sure about the others - 'marvins' states that they should be between 0.4 & 0.6. Also, some of the diodes take several seconds to settle on constant reading - with a few starting with a -ve value.
Is 'marvin' correct and should I be concerned? Should I replace all the diodes just to be sure, or are the readings OK?
Any help appreciated.
Cheers
Geoff
Just looking at a problem on my CV - no +20 Volts and F107 blowing.
I've had a look on the old pin repair site with regards where to look, what to test (and how), and have just tested the diodes D7 - D22 on the power driver board with the following results...
Testing with the DMM set to diode, all diodes read between 0.65 & 0.83 with the exception of one (D18) that reads zero (in both directions). Now I'm fairly happy that D18 is shot (it buzzes out in both directions also) and that this is the problem with the +20 Volts, but I'm not sure about the others - 'marvins' states that they should be between 0.4 & 0.6. Also, some of the diodes take several seconds to settle on constant reading - with a few starting with a -ve value.
Is 'marvin' correct and should I be concerned? Should I replace all the diodes just to be sure, or are the readings OK?
Any help appreciated.
Cheers
Geoff