Totem TM-P2EXAT strange behavior \ VOGONS

Totem TM-P2EXAT strange behavior

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First post, by holoprox

Posted on 2023-12-19, 07:26

holoprox Offline

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Location: Bulgaria, Ruse

does NOT work on ATX power!
RESET does NOT work!

boots up to post code 31:
YouTube video [8sec.]
https://youtu.be/h0f68Ra-9lI

tried with many CPU-s, many Video Cards, many ram modules

now using cacheless Celeron 266, 32 PC-100 SDRAM, matrox G100A

any suggestions are wellcome!

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Last edited by holoprox on 2023-12-19, 16:52. Edited 2 times in total.

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Reply 1 of 6, by dionb

Posted on 2023-12-19, 08:00

dionb Offline

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You say it doesn't boot on ATX power. Does it work correctly when powered with an AT PSU? In that case, is the ATX PSU known good?

Reply 2 of 6, by PC Hoarder Patrol

Posted on 2023-12-19, 09:26

PC Hoarder Patrol Offline

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Have you tried proper ATX i.e. 20 pin header + front panel power on / off momentary switch, rather than using an ATX2AT adapter thru P8 / P9?

Reply 3 of 6, by holoprox

Posted on 2023-12-19, 10:05

holoprox Offline

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Location: Bulgaria, Ruse

I use the same ATX PSU with and without ATX2AT adapter to P8/P9
As native ATX it does not start using momentary switch.
Did You watch the video?

Measured all the 6.3v/1500uF caps behind the CPU — all good (over 1500 uF) 8,5mF altogether, tested also 6.3V/1000uF caps - all good.
Tried 3 bioses (using external programmer) - same result!

Veeery picky over the Video Card — prefers matrox and ati, with all others posts to 0D or 0E AWARD CODE! Stops at detecting video card!

100+ retro computers on board!
50+ flightsticks!

Reply 4 of 6, by giantclam

Posted on 2023-12-19, 10:24

giantclam Offline

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So you've tried ISA/PCI display adapters?

Reply 5 of 6, by PC Hoarder Patrol

Posted on 2023-12-19, 11:06

PC Hoarder Patrol Offline

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holoprox wrote on 2023-12-19, 10:05:
I use the same ATX PSU with and without ATX2AT adapter to P8/P9 As native ATX it does not start using momentary switch. Did You […]
Show full quote

I use the same ATX PSU with and without ATX2AT adapter to P8/P9
As native ATX it does not start using momentary switch.
Did You watch the video?

Measured all the 6.3v/1500uF caps behind the CPU — all good (over 1500 uF) 8,5mF altogether, tested also 6.3V/1000uF caps - all good.
Tried 3 bioses (using external programmer) - same result!

Veeery picky over the Video Card — prefers matrox and ati, with all others posts to 0D or 0E AWARD CODE! Stops at detecting video card!

Nothing obvious stood out from the vid 🙁 - do your POST card codes tie in with Totems own OB Smart Debug LED codes - https://web.archive.org/web/20000914153406fw_ … om.tw/error.htm

Reply 6 of 6, by holoprox

Posted on 2023-12-19, 12:31

holoprox Offline

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Rank: Newbie
Posts: 30
Joined: 2021-08-18, 06:20
Location: Bulgaria, Ruse

PC Hoarder Patrol wrote on 2023-12-19, 11:06:

holoprox wrote on 2023-12-19, 10:05:
I use the same ATX PSU with and without ATX2AT adapter to P8/P9 As native ATX it does not start using momentary switch. Did You […]
Show full quote

I use the same ATX PSU with and without ATX2AT adapter to P8/P9
As native ATX it does not start using momentary switch.
Did You watch the video?

Measured all the 6.3v/1500uF caps behind the CPU — all good (over 1500 uF) 8,5mF altogether, tested also 6.3V/1000uF caps - all good.
Tried 3 bioses (using external programmer) - same result!

Veeery picky over the Video Card — prefers matrox and ati, with all others posts to 0D or 0E AWARD CODE! Stops at detecting video card!

Nothing obvious stood out from the vid 🙁 - do your POST card codes tie in with Totems own OB Smart Debug LED codes - https://web.archive.org/web/20000914153406fw_ … om.tw/error.htm

Yes the post codes and Totems point to memory 🙁 but...

100+ retro computers on board!
50+ flightsticks!

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