Power switch location on Chaintech 735 7SID mobo?

[ntauzin]

I have a Chaintech 735 7SID motherboard that I bought on eBay and I was unfortunate enough to receive it without the manual. The board is new and appears fine, and I managed to wrangle the jumper settings for my processor (AMD Athlon XP 1600+) from a tech at Chaintech, but neither he nor any of the motherboard manual database websites I searched were able to provide me with a manual.

Having said all that, if anyone has a manual for this board, I will gladly pay you to photocopy and/or mail it to me!

Anyway...I have the principal components in place - processor, memory, HDD - and I cannot power up the power supply because I don't know where to connect the switch cable. My switch cable has a 6-pin female receptor and there aren't any 6-pin banks anywhere on the board. There is an 8-pin "CN1" bank, which I am leaning towards as a solution. I am guessing that depending upon where I place the cable end - on pins 1-6, or 2-7, or 3-8 - I will receive different results, like having the power supply switch off after the power switch cable is turned off, for example. Am I even close?

Any help would be appreciated!

neil@lincolnpc.com

 

[Buz2b]

There should be (on the bottom right side of the MB), a group of pins that have the silkscreen labeling around them that shows the purpose of each pin or set of pins. I don't think your six-pin cable is going to work, but I could be wrong. Get out your magnifying glass and look at the board again. You are looking for things such as "HD LED", "PWR LED", "SPKR", etc. That is pretty cheap of Chaintech not to have a downloadable manual on their site. Most all major (and not so major), board builders do that.

 

[Buz2b]

EDIT and UPDATE!!
Good news for you! Being a bit bored this AM, I was able to do some searching and came up with a page that is supported by Chaintech and shows the "standard" connectors and cables for their boards. Check out this page. You want to look at the Chaintech standard front panel layout. The whole site originates on this page. I thought it would have your manual but was unable to locate the file for it. Good Luck!

 

[ntauzin]

Hey Buzz-

Thanks so much for your input! I was able to locate CN1, and also the switch I have works sorta...it will power up the board after I have put the PS switch to the ON position, but it won't turn off the board, I have to manually turn off the PS switch. I have it on pins 2-7.

I am going to look for a different switch, one that has multiple connectors on it. My power supply didn't come with a switch - bad planning on my part - so I hijacked one from an older system (the 6-pin).

Now I have a new problem - no video! I am using a Diamond V770 Non Ultra. I am not getting a signal on my monitor. I am getting power, the HDD spins and all fans are going - it doesn't sound like the OS is booting though, from the noises I hear from the HDD. Everything is seated properly, as far as the memory (1 256MD DDR) and the video card. But the monitor is absolutely and positively black. Also, I am not hearing any POST beeps. Shouldn't I be hearing a beep? Or a beep-beep? Something??

I must be missing something somewhere. I wish I had that damn manual.

Hear me now and believe me later: "I WILL NEVER PURCHASE A MOBO SANS MANUAL AGAIN. EVER."

 

[Buz2b]

A couple ot things you might try: First, pull the memory out and try to boot again. You should get a beep code then. Also, the SIS 735 chipset is notorious for being very picky about power. What make and model PS are you using? It sounds like it just does not have the juice to finish booting, in which case there would be a distinct lack of beep codes. Also try to boot with just the bare minimums; RAM, floppy, HSF and vid card. Unplug all other components and remove all other PCI cards. Can you get to the BIOS?

 

[ntauzin]

OK. Here's the status:

Powered on with RAM, HSF, CPU, video card and FDD with a boot disk. No dice.

I even removed the memory, hoping to get a beep. but nothing.

Hey here's a dumb question - is there a pseaker on the board? I don't see anything that resembles a speaker, so maybe there isn't one? I don't have a case, which os where the speaker is normally attached, as I am building my own case.

I am using an Enermax 250w PS, which is on the AMD-approved list for this processor. I am guessing the board is a goner.

 

[Buz2b]

You would need to hook up a speaker in order to get/hear the beep codes. There isn't one on the board. Got any old cases lying around? Heck, just go to a local shop and ask them for an old speaker out of a "throwaway" case that they almost always have around for parts, etc. If you can do that and still no beeps, then maybe it is dead.

You know, I hate to break it to you but that Enermax PS is very questionable for that CPU. I checked it out on the AMD site and the only thing I could find even close is the 276 watt Enermax model EG285P-V. Trouble is, that PS is only rated to an Athlon 1 GHz. Couple that with the (low) combined output for the 3.3 & 5 volt rails of 160 watts and that spells a no go with a SIS 735 chipset board. Sure, there are exceptions, but the odds are against it. Whoever told you that the PS was rated for that CPU was being a little deceptive. Of course, I could be having a "senior moment" and not see it listed on the AMD site. Did you check this for yourself? You can check the ones I'm looking at here on the AMD site.

 

[ntauzin]

Whoops, I goofed, my PS is an Enlight HPC-300-101 (300w). Not sure what I was thinking when I typed that last post...let's face it, I'm a moron.

OK, I will try the speaker thing. Thanks for the suggestion!

 

[Buz2b]

OK, I see the enlight is rated up to the XP1600+ cpu. Still low on the combined voltage of 165 watts. Borderline, but if you strip down to the bare minimum it should still boot OK as long as it is in working condition. You can get an ATX PS testor (made by Antec) for under $15. Nice addition to the tool box if you plan on doing any more builds or repairs in the future. Good Luck with the speaker.

 

[clumsum]

neil,

I have emailed you and will send you a CT-7SID Manual photo-copy .........
The Manual for this mb is not very good, but it's a whole lot better than none ....!!!