Dead TC1000?

Discussions about Sinclair ZX80 and ZX81 Hardware
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Reinier83
Posts: 4
Joined: Mon Dec 09, 2013 7:20 pm

Dead TC1000?

Post by Reinier83 »

Hi a week ago I broke flat cable's of my TC 1000 keyboard, I order a new z81 keyboard for my TC1000.
I got it in the mail and installed the new keyboard and put together the TC1000 and turn the power on.
And this what get.....

Image


Every time I turn it on I get different sceen, but only black lines.
I also notice that the ULA get very hot.

It there still hope for this TC 1000?
Mike3
Posts: 83
Joined: Tue May 13, 2008 1:58 am
Location: Charleston, South Carolina USA

Re: Dead TC1000?

Post by Mike3 »

The ULA does get pretty hot normally.. The screen shot Looks like a memory issue. or I have seen some memory issues do that,, but could be wrong,, Open the computer back up and with the power off carefully with a small flathead screw diver lift up each IC off its socket and re-seat with a little wiggling to help clean any oxidation off the IC pins and socket..of course this only works with IC's in sockets.. after you are done power it back up.. this will usually cure your kind of problem.. if not you have some other issue,,

Regards and welcome.. Mike
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