Printed circuit install

[Truckin13]

The printed circuit on the back of my gauge cluster is burnt up in more than one place, has anyone replaced a complete printed circuit before? is it a hard tast? I see that LMC has them for arounf $70 and I would rather do that than try and search a slavage yard gambling on finding a full cluster that works.

 

[82355]

What year is your Blazer?

If you are going to go through the work, you should find a factory tach dash cluster.

Martin

 

[brian wafer]

installed one on our 1977, a few years ago. works great!

 

[dyeager535]

It's not that tough, but depending on year (IE, can you easily find identical), I think I'd try a couple of used clusters vs. paying $70 for JUST the PCB. The design is horrid in general (IMO, but I'm not concerned with cost over a billion units) so new or old PCB, the problems are the same. I wouldn't pay over $20-25 for an older non-electronic speedometer version.

Burning up is not a common failure mode of these things.

As to replacing the PCB itself, simple, but takes some time. Have to strip it completely down to the base components to get the spring metal clips out that hold PCB to the housing, then reassemble.