ACT available

[PANAMATIK]

(02-17-2015 06:16 PM)Nigel (UK) Wrote:  Any ideas? What sort of fault could leave the original ACT working (to an extent) but cause the replacement to fail in this way? I know it's rather hard to diagnose things like this over the internet but it's worth asking!

Thank you in advance for your help.

Nigel (UK)

Hello Nigel,

First I'm very sorry about the problems you have. Each ACT is tested before shipping. I don't know why it is not working in your machine. My offer is, send me your HP-25 calculator, I will analyze and repair it and send it back to you.

But lets try some things before:
1.) Reinserting the ACT into the socket and trying again is easily done and I think you did that already.
2.) Could there be a contact between the ACT Pins and the keyboard?
3.) Could there be some cold solder joints?
4.) Did you try to switch ON without case, just with board and keyboard. Perhaps fixing gives some pressure to the original board.

Im sure we can fix this problem soon. I will write a PM with more details.

Bernhard