Dave,
?? That "daughter" board is near the middle of the rear most
power supply board. It's NOT the board with the (2) potentometers.
rick
On 4/20/2023 9:46 PM, Dave Downie via
groups.io wrote:
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I posted this in another group and it was suggested I post it
here.
I have a HP 8935 that I¡¯ve used for a while with no issues. Turned
it on recently and it shows no signs of life - nothing.
I¡¯ve done some preliminary checks - there is AC to the main board
(so not GFI) / bridge rectifier, but after that the circuit is
hard to follow.
Does anyone have a circuit diagram of the power supply? Or known
common issues with this model?
I've replaced quite a few caps, removed and tested FETs, voltage
regulators, transistors etc but haven't found anything faulty.
Thanks
