Re: Caps a poppin!

[heuser.marcus@freenet.de]

Tristan Mumford schrieb:
>
> There were 2x 0.1uF burnt matchheads for a start.
> I also found evidence of a few other caps that have been replaced. The
> original caps (not the replacements) had also fried judging from remnant
> scorchmarks.
> However no other components show any signs of stress.
> I replaced the burnt caps (with unfortunately different values. better than
> lumps of carbon)

Which caps did you replace?
Can you provide a good photo of the mainboard?

> I checked the seating of the sockets. Then I removed all cards (Including
> the RAM card. Kind of silly) and started it up.
>
> I got patterned junk with a bit of flashing junk.
>
> With the ram card in all I get is a display vaguely like this:
>
> |||||||||||||||||||||||||||||||||||||||||||
>
> |||||||||||||||||||||||||||||||||||||||||||
>
> |||||||||||||||||||||||||||||||||||||||||||
> etc.
> Imagine the pipes are maybe single pixel vertical lines separated by a
> same-sized gap.
> Every second row is empty too.
> The write LED is also active on the card when this is happening.
> Considering these are basically direct clones of the ][, does anyone have
> any suggestions?

Did you try to reseat/exchange the RAM or other chips?

> 80 column thing: Maybe working. Makes my monitor scream in pain. Connecting
> it to the wrong thing?

What monitor do you use?

bye
Marcus