New arrivals :)

[Icarus]

2 Atari's arrived today, 1x 520 STe and 1 x 520 STFM

The STFM was sold as dead, but it powered up and runs fine, bit of a result. Upon opening it up, just to be nosey and give it a clean, it all looks good. The motherboard has a lot of socketed chips and appears to be a good base for futher mods?

Here's a picture of it, and i've also uploaded a lower resolution picture of the board to the Wiki, as threr was not a pic of this revision on there.



I also noticed a 'fix' that I presume Atari made to 1 leg of a chip under the floppy drive



Both Atari's have suffered from the yellowing of the plastic unfortunately, but im more then happy to have got them

[FedePede04]

Both Atari's have suffered from the yellowing of the plastic unfortunately, but im more then happy to have got them

Hi you can try to retro bright them.
http://retr0bright.wikispaces.com/

ps. i just found this thread on a other forum, so if you want to use Retro bright, maybe you should read this first.
http://www.vintage-computer.com/vcforum ... troBright-!

[Icarus]

I think I will give retrobright a go on one of my spare STFM's and see what occurs

[wongck]

I always want to get some retrobright, but then the plastic is already weak so I am worried that putting chemicals on it will make it worst even if it looks better.

[Icarus]

I will post back my results when I get round to this, but it could be some time later this year, hopefully!

[rocket-dog]

because I wanted to register my but didn't know what to say!

[1st1]

That Diode-modification tells me something, but I don't remember anymore the effect which has been fixed that way, that's 20 years ago.

[ralcool]

A stab in the dark possibility.

That Diode is to a lifted Pin 40. Which is power for the DMA chip... the diode would drop 0.2v across it.

It might be that 'other' signals coming in were a bit weak and the internal comparators didn't see them as logic 'high' enough causing corruption.

Dirty hack to fix, Lower the master comparator voltage a touch.

ST.