"Jack" wrote in message
...
The FL display is very dim on this unit.
I replaced all three electrolytics on the display board, but it did not
help.

Any experience on these??

-Jan



I take it that it is 'evenly' dim ? Have you checked the negative supply
volts ? Should be around -29v. You can check it between chassis, and the
filament pins at one or other end of the display panel (the AC filament
supply is normally 'floated' on the DC supply, so it's a convenient place to
check it). I'm not sure how the voltage is derived on that model, but often,
it comes from a voltage multiplier or an AC coupled transformer winding. In
either case, it is usually the coupling electrolytics that cause the voltage
to be low. I have also seen Sony use AC coupling on the filament supply. One
particular tape deck of theirs, used to suffer regularly from the caps
failing and making the display dim. Unfortunately, if the problem wasn't
caught early enough, it used to do damage to the panel itself. If it is a
switch mode power supply, it will be derived direct from a winding on the
switching transformer.

Just as a slightly separate thought - the machine hasn't got a fluorescent
display "dim" or "off" function in the user software, has it ? I've been
caught by that more than once ... :-)

Arfa