PC board trace on Grant LT

[airplane1]

I got a Grant LT that is in decent cosmetic condition but will not do anything but light up and the channel display is dim at best.

Looking over it I see a burnt spot on the inside cover of the solder side of the board. I looked where the burnt spot on the cover lines up with the board and see a tiny spot where the trace is burnt and broke. I think someone did soldering in that spot and messed it up.

Can a small spot be repaired or is it shot? It is right where a diode is D44 and a resistor R51. In fact it looks like the soldering done there shorted these together.

I want to get this working if possible.

Thanks for any input,
AP

 

[godzilla]

I don't see why it can't be repaired. Broken traces can be bypasses with wire jumper, or if you have access to advanced tools such as the Pace cir-kit, you can certainly fix the trace properly. As for the shorted-bridged components, unbridge them.

 

[airplane1]

Thanks, I was just thinking of that last evening, putting a wire across to bridge it. There is a small board wired into the radio that I have no idea what it is for. I want to take it out and restore radio to stock.

I will post a pic soon.

AP

 

[godzilla]

Some mods are not as simple to undo as just clipping off the accessory cards. The initial modification may have involved replacing resistors with different values, bridging/shorting connections, etc. I think you'll want to find out what that mod was first and what else might've been modified.