HP 71b repair advice - won't power on with batteries or on AC adaptor

[dmh]

(06-08-2021 05:19 AM)KimH Wrote:  

(06-08-2021 04:19 AM)dmh Wrote:  Thanks. After looking at the photos popping over is still tempting :-).

That Zebra connector looks very fragile!

I only have a T10 and T15 so will need to source a T6.

Is there much risk of damaging anything else if I open to have a look? Just evaluating whether it is worth it. I don't have soldering tools or experience.

The images from Etienne are very good for you decision.

The Zebra images show how they should NOT look, they are supposed to be the same shining thin gold connections from one end to the other.

The one with the flex-cable is the metal back version - lots more screws to hold things together and in place. Not like what you have.

If you don’t have the experience - or know one who has - you will likely see what is in the pictures plus the corrosion (green) which you can clean with vinegar. But that’s the end…

The likelihood that they would recover from a repair is actually quite high, as mentioned a have done a few, mainly fixing corrosion or modifying module configuration RAM/ROM, I have yet to see one I couldn’t recover (unless display was dead… that one is hard)

So what supports the Zebra and the spacer? How is it removed?

Do you have any photos showing it still installed?