So some good news at last.

Since I have a new Tech2 coming, I was prepared to be brave and re-visit my old one as VDDS couldn't fix it

The PCMCIA card and interface were fine so I decided to accept the errors as being real.

Located the SRAM (U5 & U6) and checked their signal lines with my oscilloscope, one data line (U6-D0) looked very odd, so bought an new chip ($6) fitted it and hey presto it booted up!

The CLKMEM error is still there, but the RTC "YY/DD/MM hh:mm:ss" are correct, so it makes no sense really, but it doesn't stop it working.

Here are some pics for the record.




SRAM U6 removed:-



Replaced



So all is good at the moment

 

Nice rework! Good to hear you got it working again.

 

awesome job sussing out the issue. i don't recall mine having that IDE looking ribbon going to the display mine had spring loaded gold plated pins instead.

 

1st, thanks again guys for all your help, which I know takes time and effort, more perhaps than others realize.

My unit is very cheaply made, doubt if there's any gold plating in it

So this CLK error has got me curious, in the back of my mind I seem to recall seeing it before, sometimes.

Anyway, in the "Tool Options" menu the settings can be adjusted, however the "Set Clock" icon button does nothing. At 1st I thought the key might be defective, so I tried the TIS2000 emulation and it still does nothing, but whatever adjustments are made are saved so its not a big issue.

Just curious that's all.




and the Clock settings menu

 

on other forums like the saab one many have that RTC fail but it functions any ways it seems a known issue on clones

 

Check out the OEM Original GM TECH 2 .They get abused in the shop and still work perfect! It will only set you back £ 3529:

 

geez that pricy thats an h3 or a pretty decent corolla.

 

Can save pounds with the GM MDI

 

Nice case..

 

those OEM cases pop up on ebay every so often. there is one now with a damaged corner