Issue 6A ZX Spectrum 48K repair - eBay gamble - Lower RAM Fault Hunt

[@sharazjek338]

nice fix, great videos and loving the channel..... yes i watched manic miner load all the way, never bored of those lovely sounds , im sure i hear music lol

[@peter486]

you are insaine man keep saving our childhood memory's.

[@nowt1002]

Nice repair. I've never had any luck trying to repair those membranes. They just go so brittle. The stuff that the new ones are made of is a lot better. I don't think I'd have gone to the effort of taking the socket out and repairing it in the top side, I would just solder a wire on the bottom. It does look tidier if hidden under the chips though.

[@HappyLittleDiodes]

Yes that's the way I go now. Much easier

[@williamsteele]

Ha ha... I like how you glossed over the membrane being installed backwards. ;-) Nice repair!!!

[@HappyLittleDiodes]

I was wondering who would spot that first!

[@PooperScooperTrooper]

Nice vid. I have 2 speccys here that I hope one day to get working again...

[@HappyLittleDiodes]

You can do it!

[@rscelectrical7091]

Kynar wire is perfect for repairing traces and gives you a much neater looking repair.

[@HappyLittleDiodes]

Yes I have seen the light now, I have a reel of galvanised copper wire, already used once to patch up joints under a ULA

[@rscelectrical7091]

@@HappyLittleDiodes : It's like everything else in life, we live & learn 👍.

[@jaycee1980]

One thing I noticed is that someone replaced all the capacitors that decouple the memory chips, with what looks like dipped bead "tag" tantalums! Thats an incredibly daft idea - tant's well known failure mode is to overheat and burn!

[@jaycee1980]

I see later on that they look more like regular ceramic disc capacitors. Never seen those fitted to a Spectrum - i guess whoever replaced the ram chips and fitted sockets managed to damage them - probably by levering the chips out of the board, which is how they also caused the damaged trace you found!

[@strakajr]

Maybe it was better to leave the original PRO sockets there, because on the third RAM pin 1 and 10 are bad at first glance and repair the connection from below.

[@HappyLittleDiodes]

I'll consider that, thanks.

[@TheBezumax]

wow good music at the begining