A logical start. Normally something like 3 seconds spray is good enough.
MegaST - something recient.
Re: MegaST - something recient.
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
Re: MegaST - something recient.
no luck yet. No area on the board seems to have a positive effect.
Of couse I cannot spray the bottom while the machine is on.
I did cpu.. I did Glue, I did MMU I did rows 1&2 of memory.. then tried all memory..
Did not do anything up in the IO area.. none of that seems affected.
james
Of couse I cannot spray the bottom while the machine is on.
I did cpu.. I did Glue, I did MMU I did rows 1&2 of memory.. then tried all memory..
Did not do anything up in the IO area.. none of that seems affected.
james
Re: MegaST - something recient.
Just backtracking a little bit, I don't think you have tried a known working power supply in this machine? This all just sounds like a power supply problem.
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
Re: MegaST - something recient.
But I am using PSUs from other megaSTs?? if they run other (exact same machine) should it not run this one??
I can recap it.. I have all the caps.. I do will do one..
Any tests I can check with a multimeter?? the voltage is still over on the 5v rails.. steady 5.2v
James
I can recap it.. I have all the caps.. I do will do one..
Any tests I can check with a multimeter?? the voltage is still over on the 5v rails.. steady 5.2v
James
Re: MegaST - something recient.
Doesn't matter. A few more mA across each DRAM chips and boom, it pushes the old PSU over the edge and dies. Could even be failing caps on the motherboard. But honestly you need to start at the beginning which is power.
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
Re: MegaST - something recient.
So this was this morning with a new delta PSU.
This was only the first pass, so it happened pretty quick.
James
This was only the first pass, so it happened pretty quick.
James
Re: MegaST - something recient.
OK so you need to do the bus resistors next.
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
Re: MegaST - something recient.
OK, Bus resistors
Hmmm thought I bought them.. seems I did not.
edited.. sorry saw it was 8 pin. I need 9 pin.
Looking again
on the megaST all 6 are being replaced with 2.2k correct?
James
Hmmm thought I bought them.. seems I did not.
edited.. sorry saw it was 8 pin. I need 9 pin.
Looking again
on the megaST all 6 are being replaced with 2.2k correct?
James
Re: MegaST - something recient.
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
- rubber_jonnie
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Re: MegaST - something recient.
Just looking at the cartridge screen that's red with an error, I've seen this before caused by a wobbly cartridge, or if it gets knocked for any reason.
Can I suggest a check/clean of the cartridge port just so we can rule it out.
Can I suggest a check/clean of the cartridge port just so we can rule it out.
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...