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Temp Gauge Entertainment
- Thread starter scam75
- Start date
scam75
Well-known member
I'm pretty puffed out with this nonsense now, will probably just live with it and see how it behaves. My third PCB I bought has arrived, although I have managed to replicate the fault with both PCB's I already had (and kinda ruled them out), so I may swap it all over but I fear it will make no difference. The rugby balls almost certainly have a bearing on it, it could also be diode related, or both.
Dave - I'd be happy to send you this latest bare PCB board if you wanted to run some diode tests on it? (even fire in some new ones and see how it goes?) I think that might be the next step in this operation. Let me know. I am a disaster zone with a soldering iron or i'd do it myself!!
Cheers
Stuart
scam75 said:Dave - I'd be happy to send you this latest bare PCB board if you wanted to run some diode tests on it? (even fire in some new ones and see how it goes?) I think that might be the next step in this operation. Let me know. I am a disaster zone with a soldering iron or i'd do it myself!!
Cheers
Stuart
Hi Stuart - I'd be happy to run some tests on the board, I'm not a professional electrician but I've mended a few electrical circuits now. A linear power supply on my Otari reel-to-reel machine was the most difficult. Most recently I repaired a fault on a DVD player where the 2nd laser wasn't receiving the correct voltage and reporting "no disc".
I've also just got myself a new temperature controlled iron from ali-express which comes with glowing reviews from the youtube.
DavidL
Active member
Which is this pcb you are talking about? I haven't changed anything out other than gauges themselves. I did try a whole cluster once but the speedo is in km so wasn't quite so easy. Actually I might have naother whole cluster somewhere. I've had that so long someon gave it to me, not so sought after then.
I'll update once it's back.
dlknight said:I've also just got myself a new temperature controlled iron from ali-express which comes with glowing reviews from the youtube.
I see what you did there
scam75
Well-known member
The PCB I'm referring to is a bare cluster, with no gauges on it, or front cover. Just the circuit board for the whole cluster.
Dave - Happy to post it to you for a play with. PM address and I'll get it sent next week at some point when I get a chance.
Stuart
scam75
Well-known member
DavidL said:I see, thanks Stuart.
I'll see how I get on but I could swop out all the dials into another cluster if necessary and see how I get on.
I have done this David, and the fault persisted. I'll post this new (to me) PCB to Dave K this week for analysis!
So far the rugby balls, and gauges themselves, are the only variables that make a difference (and they obviously plug into each other), but I've a feeling that there could be a common issue we all have, PCB/diode or something related. Be interested in the PCB examination findings!
The other thing I have thought, is to try and metal polish the gauge prong holes, which would make sense, but that looks awful fiddly and nigh on impossible!
Cheers
Stuart
scam75
Well-known member
Anyway, on that note, Dave, have you had a chance to experiment on the PCB yet?
Stuart
scam75 said:Anyway, on that note, Dave, have you had a chance to experiment on the PCB yet?
Stuart
Sorry, still sitting on the sideboard, I need to print out the page from the workshop manual with the wiring diagram on. I had a quick look at the diagram a couple of weeks ago and it looked very simple from what I remember with the gauge almost wired directly to the sender with little componentry inbetween.
Will let you know what I can make out from the diagram and then if there is anything that is worth testing on the cluster [s1]
scam75
Well-known member
dlknight said:scam75 said:Anyway, on that note, Dave, have you had a chance to experiment on the PCB yet?
Stuart
Sorry, still sitting on the sideboard, I need to print out the page from the workshop manual with the wiring diagram on. I had a quick look at the diagram a couple of weeks ago and it looked very simple from what I remember with the gauge almost wired directly to the sender with little componentry inbetween.
Will let you know what I can make out from the diagram and then if there is anything that is worth testing on the cluster [s1]
No worries and no rush. Mines is behaving just now....................
Cheers
Stuart
scam75
Well-known member
My temp gauge had been getting worse and worse before the car went into the bodyshop, for a good few months, consistently going off it's head once it reached the quarter mark, on every drive. A new development however, which brings me back to thinking the fault lies in the gauges rather than PCB or wiring, was the gauge flicking wildly skyward and sticking in the full up position. Now I've seen this before, however this time it stayed there when the ignition was switched off. At this point surely the wiring and PCB are no longer in operation? Thoughts?
Anyway, a hefty flick on the binnacle glass saw it drop back to the off position. So, today, I decided to transplant my other gauge in, which from memory worked, never went haywire but sometimes it didn't actually move at all (inoperative). Once in the car today it was dead as a dodo, wouldn't work at all. Petrol side fine but hee haw on the temp side. So, back out it came. Whilst I had the original gauge out I gave the screw thread and the rugby ball a quick rub down with contact cleaner. Put it all back together and it has worked perfectly for the rest of the day. Now, having seen this movie many times before, I know full well this can happen and it will 100% at some point start it's flicky nonsense again.
So, what in hell is actually going on here? Can we pin this 100% on the gauge now?
Stuart
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