Arcade Collecting > Merit/JVL Touchscreen

raidion mobo's

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ed12:
ok here is a new 1to me
5-x raidions..
1-x ion style cab >with raidion mobo 2006 s/w<

problem
board may or may not boot
power cycle board's and they will boot.

now i have done the power bypass trick on the atx supply >green to grnd<
so that is not it.
have swapped the 533's with known good 1 for testing,same result's

my thought's are a reset timming issuie at boot or ram going south.??
now rember these board's all use the merit bios chip.
so this is to in question.

any 1 had this problem ?

these are the gold board
2=pcmi
2=ide hd interface
1=floppy
1=the mini video interface

ed

mahkeymike:
replace caps.
must be a cap issue not holding charge.
check for leaking, dome top of caps.

ed12:
i agree with u there..but i have chked all cap's
0-% were out
will monitor the power-supply rail's to see..
it has to be simple..
i say this because as i said,if i power it up
they may or may not make boot..thus the reason i did the nasty trick with green to grnd.
it some time's takes a fast re-boot to make them go,then they are soild..
and i cannot really think it's the bios chip
as the bios on these 6-x board's are of the 2 different types they used
in plc package chip >not dip<.
now please eveyone rember i am not running there i/o's and or hd's etc,
they are just hooked to a power supply and monitor for bare bone's testing
plus of course a keyboard so i can break into bios..

ed

mahkeymike:
I had an issue like this aswell. At first i thought it was caps, but as you mentioned, I also tested the caps. Eventually the board died and would not boot at all. It ended up being the Northbridge chip. Some of those radion mobo's did not come with a heatsink on the NB. I always add heatsinks to both NB and SB chips from now on.

ed12:
yup i have to agree
the northbrdge need's a heat sink..
where do u get your heat sink's from ?
if u do not mind the question..?

ed

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