Ross Compressor build not working HELP.

[sgoman]

Damn! I'd like to say that is not true but... My tester is cheap but is not so bad,, I re-check all resistors and I have to say that something I wan't to realize last time is that different resistor Are very distant to the band values weared! R22 18k (not 27) R13 38k(not 150k!) R21 24k (56k!) R18 8k (150k!) R17 2,3k (1M!!!!) over 100k my tester does't work, so I can't say if resistore over this value Are ok, but these are surely over 100k. I think to write the same text to musikding, bad IC, bad resistors, I want my money back...

[PRR]

Mis-marked resistors are VERY unlikely. Once in a few thousand you find a "10K" which is really 1K, but nobody makes THAT many mis-marked resistors.

There's also different color-codes for 10%-5% and 2%-1% values. MusikDing sells "widuhr" Widerstandsuhr (code-wheel).

You can't measure resistors in-circuit. There are usually other resistors (or chips) in parallel which gives a lower reading.

> over 100k my tester does't work

The meters used for POWER line testing may lack high-resistance ranges. They also leak on the voltage ranges. When testing a POWER line, you want to know if there is "real" 230V, or if the wire is broken but 230V is leaking across from another wire. These meters are essential for safe power testing but NOT good for small electronics. The $3 DMMs sold from China on eBay are fine.

[sgoman]

I check the resitors 11 and 12 off the pcb, their looks good, I've done a pair of photos, I hope there will be some more chance with this effect.

http://www.mediafire.com/?209rajwbmldauke

http://www.mediafire.com/?9cmo5iygwdkznbn

[sgoman]

Father, why do you leave me?

[PRR]

I'm really out of ideas. Sorry.

[rousejeremy]

Just a shot in the dark. But try to go between all your copper traces with a razor blade. All of them. Hard.