Rev counter clocks - repairing the PCB?

[Dougie_SRi]

I have six (six!) sets of rev counter clocks now, and none of them work.

This is mostly due to the corroded and mashed up part on the bottom of the printed circuit board, which they all seem to suffer from.

One set the rev counter doesn't work on (among other things).

One set the engine won't switch off with them fitted.

One set the battery light, fuel and temp gauges all no longer work.

One set just don't work.

One set from a GSi don't really fit, but the battery and oil gauges don't work anyway.

One set, the latest ones, make the fuel pump relay buzz like mad, and light up one half with the lights on, and another with them off.

Seriously annoyed now with buying set after set only to find an amusing new fault. Is it possible to repair the PCB or is there a GM part no for it?

[Andy]

Mine are the same the revs are fockd sometimes it will flicker

[meritlover]

sounds like you could make at least one good one out of your collection of failures. if the board has broken tracks then repairing them will certainly go some way to restoring at least some of the functionality.

have fun

[Dod]

As above, the fuel and temp guaegs are universal on these, couldnt you just swap them around and make maybe 2 or 3 sets?

[Dougie_SRi]

Yeah might have to see about that.

Any suggestions for how to repair the mangled tracks? Soldering melts the plastic!

[Dod]

They're copper lined yes?

[Dougie_SRi]

Yeah, thin copper strip, that gets mangled when the clocks are pushed into the dash.

[mikey14sr]

If you're really carefull with the soldering iron, you should be able to replace the broken sections with bits of basic speaker wire, just be sure to insulate any bare bit before putting them back in.

[AlexW]

If you ever feel like selling one or two pm me hehe

[Will F]

I have repaired many a sets... you carefully peel the copper from the plasctic... get some thin wire and solder the wire to either end of the track.

Job jobbed

[Welsh Dan]

I had problems with mine not letting the engine turn off - the bottom tracks were shorting. I separated them then put sellotape over the tracks lol.

Still working :).

Put something behind the tracks if possible when soldering.

[Dougie_SRi]

I'll have a look tonight, and try not to melt everything!

Do the little resistors ever fail?

[craig green]

Any suggestions for how to repair the mangled tracks? Soldering melts the plastic!

Rear window de-misting element repair paint/stuff.

[mikey14sr]

I'll have a look tonight, and try not to melt everything!

Do the little resistors ever fail?

I'm sure I've heard of the odd one failing, don't think it's a resistor though, isn't it a diode?

[Mazz]

We got a length of thin wire and very low wattage soldering iron and just by-passed the corroded piece - worked a treat..

[Dougie_SRi]

Managed to get one set to work but peeling off the copper track and soldering some thin wire from Maplin on, then covering it all with insulation tape. Looks a bit messy, but it can't be seen anyway. Just need to sort out another set now.