exxos's Atari, Amiga & retro forum

Posted: **13 Aug 2020 21:58**

Hey guys,

Just a progress blog that I'll update as I go:

Motherboard: C070523-001

Problems:
* Corruption on DMA transfers, Ultrasatan
* Video output issues with sync/banding

Required services:
1. New Exxos PSU
2. STFM Video capacitor replacements (exxos kit)
3. Remove old motherboard ram
4. Complete motherboard re-cap
5. DMA and floppy resistor pull-up fixes

Posted: **13 Aug 2020 21:59**

Just finished soldering in Exxos new PSU

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PSU in the machine

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Test the machine boots with the new PSU

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Time to recap the video circuitry

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All caps replaced and resistor added for sync

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Posted: **13 Aug 2020 22:00**

:bravo:

Posted: **13 Aug 2020 22:03**

:bravo: Kill the rubbish marpet while your in there ;)

Posted: **13 Aug 2020 23:15**

@Steve Nice work sir.

Posted: **14 Aug 2020 12:27**

Bye bye DRAM :)

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Posted: **14 Aug 2020 13:42**

That's awesome!

Posted: **14 Aug 2020 15:45**

Remove the cap inside the modulator he says... Steve says no problems...

Holy mother of lord

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Okay, job done lol

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Motherboard fully re-capped with Vishay, Panasonic and Nichicon caps.

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Posted: **14 Aug 2020 16:37**

Looks like a nice job there @Steve

Posted: **14 Aug 2020 20:28**

Floppy drive resistor fix applied:

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Test floppy and system by loading frontier:

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exxos's Atari, Amiga & retro forum

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