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August 07, 2020, 06:07:26 pm


SMF - Just Installed!

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Messages - b1Ack

In case somebody try to repeat process stated in main article and will go this far to read.
This info can save you a good PSU or MOBO, just your luck decides what will burn if do things wrong.
And this can be related to lot of other brand PCs, Z600 definitely too, lot of HPs and some DELLs maybe.

!!! NEVER CONNECT 5V (pins 1 and 10, direct on one side of 18 pin connector) FROM 18 PIN MAIN POWER TO YOUR PSU OUTPUT !!!
Just because that's not a power input, but output from DC-DC converter on board. To power HDDs, I guess.
If your PSU is modern and have separate DC-DC converters for 5 and 3.3V and you connect it to that 5V - sooner or later something will die. Your PSU or board. And it will happen anyway. If it's something older with ferrites-based stabilization - ok, PSU most likely can withstand this, but I will not sure about board. Just because it's very bad idea to connect different switching power supplies in parallel, without synchronization, without balancing load (just thick wires in this case - not enough), especially two push-pull DC-DC based on MOSFETS (just like one already present on board).
What to do right? Just not connect that 5V to ATX PSU in any way. You don't need it. Your drives will get power from another place.

About memory 5V power - I'll think it's better to feed it from 5Vsb (if you have it power enough) or at least via schottky diodes to not get current back to your PSU in any way (and potentially get not working some sleep modes).

How update bootblock ?
I'm surprised that lot of people was looking for right rev.003 full image, not looking what we have - a /B option for DOS flasher. Just used it and my bootblock became a new one with 2018 BIOS version in some time. And - process look really long and looks like it hang. For more than minute. No progress, no numlock reaction - nothing. Don't panic, read what you have on screen, all fine, obey and go make some tea and not look on this f***ing thing - and it will end and be ok.

About other stuff (F1 warnings, right type speaker, ambient temperature sensor) - here is some pictures how to make it think all is fine.
Just needed two fans of any type (3-4pins) for front and rear.
Yep, that's chieftec LBX/LCX chassis, board fit there good enough, but will need few extra holes for HPTX standoffs and some metal cut out for fit power connector and maybe one side of COM port.

In text brief:
USB 8+10        |    Front Audio 2+4    |    1394 11+12 (and pull out pin 11 to use default case header)
Rear fans 3+5   |   Mem fans - thke both TACH and solder it to pin 3 of front fan 2 (2nd show itself in BIOS monitor, 1st - not, so I choose 2nd).

Front panel 2+4 Power LED - put there 2pin opposite dual color LED matching your case size. Just for errors indication. Simple way to see how it works - pull out video card and turn on without it. And wait few dozens of seconds.

Ambient sensor - just take TO-92 2N2222A (or any modern low-power single NPN transistor in TO-2 case without resistors inside) and connect its emitter to pin 12 and soldered together base and collector to pin 11. What profit? You will may use simple PWM case fans and it will rule them. Only PWM, here is no voltage control at all. Picture is for DELL, HP looks like have already onboard all other little stuff except transistor.

Why big speaker? This thing have audio amplifier onboard. You don't need anything additional to watch youtube now xD