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Hello. Maybe im posting on the wrong place sorry in advance if it is the case. I need to replace a 474 capacitor but i dont have this value in my spare box , can i replace it with 472 or 473 capacitor because i have those two values in my spare box thank you for any help.

I just got this eprom programmer from 80s e9a elan digital sustems uk.the programmer turns on and display 0FFF3FFFF and every time i switch it on the fifth caracter from the left change but other caracters stay the same, i went to benoit mathieuw website to download the manual and tried to...

hello all. Ineed help with eprom programmer GP MOD XP 640 from GP industrial UK , http://matthieu.benoit.free.fr/pdf/GP%20XP640%20User%20Manual.pdf I ve already took a look on the pdf but im not sure,i would like toknow if it is able to handle old eproms that requires 25v 21v vpp, the ones we...