BK Precision 2831E Input Resistor Repair

[apex_seals]

All,

I just bought a busted BK 2831E on Ebay. Looks like the PO exceeded the input voltage rating and burned up a high-precision metal film resistor. It's burned up so bad that I can't read one of the color bands...

Everything around it checks out OK - no high resistances, no blown caps, no burnt traces, etc. Unit boots and operates fine other than this input resistor.

As I can't find a service manual for the thing... anybody mind sending a pic of the inside of their unit so I can see the color bands? It's the three blue 1W metal film resistors up by the input terminals. Measured values would be even better 

Thanks!

[Kean]

In my 2831E
- R101 and R102 are brown-black-black-orange/brown - so 100k 1%
- R103 is brown-black-black-brown/brown - so 1k 1%
Values confirmed by measurement.  I think they are 3W parts.

I had to do a repair on mine to fix a short in one of the PT6311 VFD driver ICs (bought as faulty).  That caused R203 to burn, so after fixing the short I replaced R203 with with a 100R 1206.