Problem with DSATX220

americanskiff · 04-12-2008, 09:37 PM

Ill try to keep this short...alltough impossible

I finally have everything for a carpc. I am trying to bench test the DSATX 220 psu. I have read all the faq sheets, searched and read many messeges and seen alot of pics of how to do this. I allmost have it working....but, its not.
My setup is a AMD 3000+ on a micro Asus A7VBX-LA atx board. I have a 3.5" 160gig hd, one 512meg of ddr ram, on board video and sound, ps2 keyboard and usb mouse connected to motherboard. I have the liliput connected to ac house outlet for now, will eventually power from DSATX psu probably.
Setup for bench test....I am using a pc psu to simulate a battery. I have the yellow wire from the pc psu hard drive molex going to the DSATX and the black ground going to the DSATX also. I have a switch for simulating ignition on the yellow power wire going to the acc on the DSATX. I also have the wire jumpers on the pc psu pins 13 & 14 also pins 8&9. Everything starts fine and posts but in the middle of windows loading, the DSATX turns off. My motherboard also has the 4 pin power connector(not sure what it is called) and when this is connected to the motherboard and the DSATX is when it works fine but loses power in the middle of windows loading. When I disconnect this 4 pin power thing, the DSATX psu and the motherboard seem to never lose power but nothing posts or boots. I am going nuts!!

Any suggestions? Hope my explanation makes sence

forgot to mention... before the DSATX turns off in the middle of windows loading, the DSATX starts blinking 2 times over and over with the red led light..

DarquePervert · 04-12-2008, 09:51 PM

Are you removing the ACC line once it starts to boot up or are you leaving it connected?

Also, have you measured the lines with a multimeter?

americanskiff · 04-12-2008, 09:58 PM

no Im not removing the acc wire/switch once it starts. I thought it would be left connected. Should I remove it? I dont have a multimeter.

DarquePervert · 04-12-2008, 10:20 PM

No, you've got it correct for testing. You shouldn't cut power on teh ACC line.
However your symptoms act that way.

Be patient. Jef is a great guy, and I'm certain he'll touch bases with you.

I suggest getting a multimeter and testing the voltage on those lines. You can get a DMM for $10 at Radio Shack.
Well worth the investment.

americanskiff · 04-12-2008, 10:23 PM

I appreciate the help. I did find out the 2 blinks on the red led on the DSATX indicates its shutdown mode. For some reason something is making the DSATX go into shutdown mode about 20 seconds after its powered up. I dont have a clue what it is..I even tried to adjust the P1 on the DSATX all the way up....didnt seem to change anything.

americanskiff · 04-12-2008, 10:27 PM

I get the feeling it may have something to do with the 4 pin power connector that goes from the DSATX to the motherboard........I dunno

DarquePervert · 04-13-2008, 08:17 AM

Quote: Originally Posted by americanskiff

I get the feeling it may have something to do with the 4 pin power connector that goes from the DSATX to the motherboard........I dunno

Could be.
My motherboard requires the 4-pin 12v power connector as well and my DSATX works just fine.
Perhaps that 4-pin cable is faulty?

Not going to assume this, so I'll ask...
Does the motherboard boot up correctly when connected to a AC PSU?

americanskiff · 04-13-2008, 09:01 AM

I tried another cable and same problem. Yes, the whole thing boots up and works perfect when using pc psu only. This is driving me nuts..im probably missing some stupid little thing

americanskiff · 04-13-2008, 09:55 PM

any more suggestions?? Im at my whits end with this.. Either i get another motherboard, or return this psu for another or give up all together. I have searched all over for any messeges with the same problem as I am having and found nothing.....help please?????

americanskiff · 04-14-2008, 05:51 PM

Qeustion.....instead of using a pc psu to test bench with I have a battery charger. I know you can use a battery charger to test with, but mine has three setting. 2 amp(trickle charge) 10 amp and 50 amp (cranking start). Would using 50amp be to much for the DSATX 220 to test with???

Rick99TAWS6 · 04-14-2008, 07:13 PM

the DSATX manual says not to use a battery charger to power it..... not sure why - I just grabbed a 12v battery and hooked up the dsatx and the battery charger to it when setting up/testing, set mine on 10 amp and it worked fine

greatwhite · 04-14-2008, 07:23 PM

Quote: Originally Posted by Rick99TAWS6

the DSATX manual says not to use a battery charger to power it..... not sure why - I just grabbed a 12v battery and hooked up the dsatx and the battery charger to it when setting up/testing, set mine on 10 amp and it worked fine

Because most battery chargers workon a "pulse" method to charge batteries. Electronics don't like that type of power delivery much...............

I did the same when bench building my system. Small 12v lawn tractor battery and a battery tender just to prolong the working time before voltage dropped off. No ill efffects on the unit.

Cheers

americanskiff · 04-14-2008, 09:14 PM

ok...I switched motherboards and still had same problem. I then used my battery charger instead of AC psu. Works fine with battery charger on 10 amp hooked to the DSATX....no I have to switch back to other motherboard to see if it works....im pretty sure it will

greatwhite · 04-14-2008, 09:26 PM

well, maybe your hacked PSu wasn't putting out enough juice. Or shutting down.

Did it ever exhibit this behaviour on battery power? Or have you not tried that yet?

Good luck.

americanskiff · 04-14-2008, 09:30 PM

other board didnt work right. I think it may have been a lose wire or something. Anyways, I rehooked up the board that was working and it is.....so im staying with it...its a MS 7184. I geuss the pc psu wasnt putting out enough power or something. Now I can sleep tonight