"Markus Wolfgart" wrote in message
...
Dear OM's

I'm looking for some help concerning a defective driver pcb for a
yig oscillator inside the mentioned device above.

see link: (http://www.mikrocontroller.net/topic/215840#2149959)

I'm looking for the proper value of the destroyed resistor ( 50 ohm) in
the lower corner as well as for the value of the capacitor.

Have any of you a link to the service schematic of the mentioned driver,
or could send me a copy of it.

Any help would be appreciated.


vy73

Markus
alias
DL8MBY


I agree with K7ITM that tants have a habit of burning out like the one in
your photo. And I agree it looks like the tant and series R or L are just
filtering a power supply coming onto the board.

From the photos, it looks like the square pad of the blown tant is connected
to a ground plane inside the board. After removing the cap, you could buzz
it out to check. But I think I see a + adjacent to the square pad on the
top copper in your 01k photo. I wonder if there is an error in the PCB
layout or the schematic. You might want to check if pin 8 is really +15V
or -15V by measuring the voltage on the unplugged cable.