Introduction, Repair Progress, and Questions

[J Thomas]

[charger105]

On all the modules I've seen, R2 is 22M (or at least it's supposed to be !). Red, red, blue, silver equals 22M with 10% tolerance.

In fact I don't think it really matters, so long as its high! When measured, they're usually all over the shop.

On a similar matter, does anyone know if there's some method of determining the value of surface mount components ? There's usually nothing written on them. I supsect you're just supposed to "know" what their values are.

Rgds.

[rewolf]

On a similar matter, does anyone know if there's some method of determining the value of surface mount components ? There's usually nothing written on them. I supsect you're just supposed to "know" what their values are.

Your suspicion is correct.
SM resistors usually have their values printed on them, but I've never ever seen this on a capacitor. The only way to determine its value is to measure it - and to accurately measure it you have to disconnect (=unsolder) it on one side.

[J Thomas]

[J Thomas]

[your_man_in_Hamburg]

I found the schematic of the circuitry quite interesting, the solar charging part in particular. To be quite honest, I was flabbergasted. Someone, I have long forgotten who, has told me that the Synchronar contained some really clever engineering on the solar power side of the design, to make ends meet energy-wise. Well, since a single diode cannot really be labeled clever solar power engineering, I suppose that person was wrong, or was talking about some later model of the Synchronar. In any case an interesting schematic.