Atari 1040 STe issues

[dougal22]

I got given an Atari STe which was spares/repairs. My intention was to either fix it but if not I would take the TOS 2.06 ROM chips and shove them in my other 1040 STe.

 

I could not switch the ROMS because my working 1040 STe has the TOS roms soldered on the board

 

So i messed around and re-seated some Motorola PLCC and it now boots but with issues

 

A: Sometimes gives lots of screen glitches whilst booting and even once in GEM

B: Sometimes won't boot ... will do bombs on the screen and have glitches

C: Disk drive will not do anything [ I Checked connections ]

D: Sometimes it reads 1024 RAM, sometimes 2048 RAm and sometimes (most times) the full 4096KB

 

Any help would be appreciated

[ParanoidLittleMan]

You should re-seat RAM modules too as first measure. And if possible clean all contacts of socketed chips and sockets.

Edited January 7, 2015 by ParanoidLittleMan

[dougal22]

You should re-seat RAM modules too as first measure. And if possible clean all contacts of socketed chips and sockets.

 

Yeah I re-seated the RAM.

 

The issues seem to be:

Sometimes gives glitches (colors & graphics)

Sometimes reads the ram wrong

Sometimes puts out bombs during the self/memory test at boot

Always: Hear the disk drive spinning and the light remains on but NO clicking of any kind

 

I'll do as you said and clean the contacts etc..

[GadgetUK]

Probably needs PSU recap as well!

Edited January 8, 2015 by GadgetUK

[locnar77]

I was thinking you might need a new PSU as well or recap

[KLund1]

1 or more ram simms might be bad. I had similar issues, swapped out simms for 'new' and all was fine. fyi

good luck.