Quote:
Originally Posted by wasyoungonce
Hi David
Check the battery clips are not distorted and losing contact. This can lose VSRAM etc. Other that that it really needs VSRAM measured to gauge the fault.
Other than a bad battery/battery clip, it could be a couple of things, mainly: bad Diode D1 (common fault); SRAM IC (another common fault); C8 (sometimes) or RTC IC (rare). Since D1 is a dual diode: one half feeds VBatt to SRAM/RTC cct when powered off.
+5V powers the other of D1 cct when switched on. This allows SRAM data to be stored by sensing the lower voltage, Vbatt, and come to life when it senses +5V (aka switched on). If you lose Vbatt/VSRAM then data will not be saved.
It's all to difficult to say with certainty what the issue is atm without measuring VSRAM. I have replaced SRAM IC's, D1's and RTC for similar symptoms (all different faults).
Do you have a friend who can wield an multimeter?
We all have skills...I for instance have no artistic talent  yet yearn for such!  |
yes artistic talent would be nice - missing from my gene pool
so if it is one of the other things - where would i get them repaired now?