SE/30 - Design for Drop in Replacement Power Supply

[wildstar1063]

As an update, I did end up, having to swap the connector from the old Sony power supply to the new one. The provided
male connector that is intended for the other power supply types, has flat pins, and the Sony male connector has round pins,
And the internal female connector from the original Sony power supply housing does not play well with the flat pins on the
connector that is provided, after I got everything back together, I was having intermittent connection issues due to the
improperly mating connectors. So I had to unsolder the old connector from original Sony power supply and put it on the new one.

As I said, live and learn ;-)

Chuck E.

 

[(o';'o)]

Hey All,

I am getting word back from a customer that they are having significant screen flicker issues when running my new PSU with a Micron Xceed Grayscale card. The issue appears to be primarily from cold bootup for the first 30 seconds or so (sometimes more, sometimes less), but there have been random glitches during sustained operation as well.

The issue appears to lessen it's severity as the unit is warmed up. So, if a full shutdown and reboot is done after warmed up, the flicker time is reduced or non-existent. The customer has also tested the Micron Xceed with the original Sony PSU and Seasonic retrofit, both of which have no screen issues (the Seasonic is configured to run off two separate 12v supplies).

My question is - Has anybody installed my PSU with a Micron Xceed Grayscale card, or any other grayscale options?

I would be happy to ship a PSU for free to someone willing to test with the Micron grayscale card. It would require some effort and reporting back, but would be worth it to me to know.

Thanks,

Chris

 

[mst3k]

Greetings

I'm using Zigzag Joe's 30 Video GS grayscale card and booster on my SE/30 with your power supply, and a recapped analog board.

No issues.

 

[(o';'o)]

Greetings

I'm using Zigzag Joe's 30 Video GS grayscale card and booster on my SE/30 with your power supply, and a recapped analog board.

No issues.

Excellent. Thank you for confirming.

What kind of hard drive are you running?

 

[Reasons.]

Same here; full setup is a Carrera, Bolle riser, 30Video GS, and ZuluSCSI Pico. Everything's working fine.

 

[mst3k]

Howdy,
That machine has a MacSD SCSI emulator board but I also tested it with a Quantum ELS 80S HDD.
Specs: Macintosh SE/30, 64mb RAM, MacSD, Asante MacCon Ethernet, PDS Booster, 30 Video GS, recapped AB and LB, and your Mean Well based PSU.
All good. No glitches.

 

[nickpunt]

I think the xceeds are about 5-6w of power whereas @zigzagjoe 's is 2w iirc

I bought one of your supplies @(o';'o) but haven't installed it in my xceed se30 yet.. I need to buy a soldering iron / learn how to do it first I'll probably preorder the ifixit one.

What kind of testing do you need done?

My question is - Has anybody installed my PSU with a Micron Xceed Grayscale card, or any other grayscale options?

I would be happy to ship a PSU for free to someone willing to test with the Micron grayscale card. It would require some effort and reporting back, but would be worth it to me to know.

 

[zigzagjoe]

I just tested with both my Micron Xceed Color 30HR and 30Video GS in my machine with a retrofit PSU. No issues, both cards worked as expected.

Those power figures @nickpunt mentioned are accurate, also.

 

[(o';'o)]

What kind of testing do you need done?

I'm looking to verify screen / system stability with focus on the Micron Xceed Grayscale card installed.

Essentially a 'go', 'no-go' report is good enough at this time.

If a system was found to be unstable, then I would be curious to dive deeper. My aim is to ensure that my PSU is rock solid and will give trouble free performance despite what expansions / cards folks are running.