Studer A80 VU Audio Remote Schematic?

Hi all,

...just had a tantalum go s/c in the switching PSU for the audio remote (the box that sits at the bottom of the penthouse behind the machine that distributes the audio control to the channel modules) and it's taken out a resistor next to the SG3524 IC (the PWM IC. Note I didn't say "PWM modulator IC"- I know it winds NYDave up :wink: ) It's the board with the small stepup inductor and 2N5876 transistor on. It's an A80-VU MkII.

...can anyone help me out with a schematic so I can find the value of this resistor? It's past measuring now! The board number is:

1.328.016 - 11

Any help would be fantastic,

Thanks!

:thumb:

Mark

Mark,
I will fix that when I´m in the workshop to morrow.

--Bo

Thanks Bo!

I managed to work out the value needed from the datasheet for the SG3524- it's acting as a step-down regulator to get +5.78V from the A80's +24V supply- and it's working again, but I still need the schem to make sure that I've got things right.

Cheers!

:guinness:

Mark