Quote:
Originally Posted by Sean Williams
Does rather smack of a dual rail op-amp not seeing both rails....
Have to say probe amputation was a real issue - especially on the 2l petrol transits.... that fan really needed a better cowl 
Be great to see it all behaving properly again. |
I've had my knuckles firmly smacked by the one in my Merc T1 on a couple of times!
Had all of the analogue cards out yesterday for a visual inspection and to see if there were any further tantalum caps hiding on those.
Note: there are two identical boards used for the horizontal and vertical deflection amplifiers... I've only photographed one as they're identical and neither show any signs of damage.
Only real faults I've found there were one toasty looking resistor on the volts/ohms card, though it measures absolutely spot on. Being a slightly higher power type by the looks of it I do wonder if it's just discoloured from 30+ years of warm running rather than an actual fault. Without a schematic I'm just going to need to keep an eye on it I think. Other fault was one dry jointed cap on the amps/temp board. Other than that they're all just wanting a good blow over with the air line courtesy of living right next to a fan.
The temperature readout is behaving slightly more sensibly now I've got the right probe plugged into it. There's still an offset, but it's at least responding to changes in temperature on the probe.