DamanC Posted May 9, 2010 Share Posted May 9, 2010 The power supply is a OCZ 600 watt unit and still under warranty. Wouldnt be suprised if its this - cack rebranded units. What you have described is most likely a PSU or mobo fault unless you rig up the speaker and get some beeps If I were a betting man Id take a punt at the PSU. Quote Link to comment Share on other sites More sharing options...
Bobbeh Posted May 9, 2010 Share Posted May 9, 2010 Sounds like what happened to my old machine, I whittled it down to being the motherboard after testing everything else one thing at a time. Very annoying when that happens. Quote Link to comment Share on other sites More sharing options...
Homer Posted May 9, 2010 Author Share Posted May 9, 2010 Wouldnt be suprised if its this - cack rebranded units. What you have described is most likely a PSU or mobo fault unless you rig up the speaker and get some beeps If I were a betting man Id take a punt at the PSU. Thanks Daman, I was hoping you would spot this thread Assuming it's power supply, what would you recommend as a replacement? Both power manf. and wattage. spec: - E6750 duo - 2GB Corsair Dominator Ram (Pc800 I think) - 2x power hungry HDD's - 1x DVD burner - 9800 gtx+ gfx My personal feeling is it's the motherboard, I never have any luck with them, this time I chose an expensive one hoping it'd last longer! Quote Link to comment Share on other sites More sharing options...
DamanC Posted May 9, 2010 Share Posted May 9, 2010 Corsair. They rate their PSUs on max sustainable wattage unlike all the others that rate them on peak power, 'nuff said! 5 year warrenty too The 550w unit (CMPSU-550VXUK) Will do you nicely however with a jump to i5/i7 tech in the near future? it would be worth spending the little extra on the 650w Version (CMPSU-650TXUK). Quote Link to comment Share on other sites More sharing options...
DamanC Posted May 9, 2010 Share Posted May 9, 2010 Just to add, we have yet to have one fail on us.......and I have a corsair unit in my rig. Need anymore persuasion?.........they come in nice bags Quote Link to comment Share on other sites More sharing options...
Homer Posted May 9, 2010 Author Share Posted May 9, 2010 How many spondoolies are we talking about here for a 650w one? I have no plans to upgrade the MB/processor anytime soon, but "assuming" there's no major power plug changes in the pipeline what sort of cost are these? The OCZ thing cost about £70! Can you supply the Corsair ones? I've used Corsair RAM for many years and almost never had an issue, never realised they had branched out to other components. Quote Link to comment Share on other sites More sharing options...
Scott Posted May 9, 2010 Share Posted May 9, 2010 I think mine cost about £80 delivered (Corsair 650). Quote Link to comment Share on other sites More sharing options...
Ric Posted May 10, 2010 Share Posted May 10, 2010 Corsair do everything these days their new case, the obsiden or something, is a must have it looks ace Quote Link to comment Share on other sites More sharing options...
DamanC Posted May 10, 2010 Share Posted May 10, 2010 RAM, SSD's, cases and PSUs. We are spoilt! Retail on the 650s is around £80, we pay £60+VAT so by the time to add postage there is no saving to be had Quote Link to comment Share on other sites More sharing options...
imi Posted May 10, 2010 Share Posted May 10, 2010 650w for a pc - YIKES Quote Link to comment Share on other sites More sharing options...
Homer Posted May 10, 2010 Author Share Posted May 10, 2010 Okay, tried to test the PSU as suggested above, but it looks like the unit only sends supply after it's had a signal from the motherbaord. With just it turned on at the back of the PSU, there's only a single 5v live feed from one of the terminals. Everything else is dead (and I know that most of the plugs are supplying power as they work when it's all hooked up). So, unless there are any bright ideas, it looks like I need to take a guess at whether it's the main board or psu... Quote Link to comment Share on other sites More sharing options...
MrRalphMan Posted May 10, 2010 Share Posted May 10, 2010 I think this is time for a poll.. I still think it's the PSU, but am normally wrong in these things... More by bad luck then judgement... PS... PSU is going to be cheaper.... Quote Link to comment Share on other sites More sharing options...
Smallshinyant Posted May 10, 2010 Share Posted May 10, 2010 so is it stripped of all components at the moment? Quote Link to comment Share on other sites More sharing options...
Homer Posted May 10, 2010 Author Share Posted May 10, 2010 so is it stripped of all components at the moment? Yes Quote Link to comment Share on other sites More sharing options...
Smallshinyant Posted May 10, 2010 Share Posted May 10, 2010 What do you get if you connect the power cables, speaker cable, and the cable that goes to the power switch on the front of the case? nothing else though. Quote Link to comment Share on other sites More sharing options...
Homer Posted May 10, 2010 Author Share Posted May 10, 2010 What do you get if you connect the power cables, speaker cable, and the cable that goes to the power switch on the front of the case? nothing else though. post 21 mate, tried exactly what you said and there's no beeps. The only thing that happens is the PSU fan and light come on, and the hdd light and power light (from the mainboard) are lit constantly. Quote Link to comment Share on other sites More sharing options...
ozz Posted May 10, 2010 Share Posted May 10, 2010 Quick thought, have you tried reseating the CPU? I had an IBM unit do this once. failing that I'd agree 50/50 PSU mobo, can't be that hard to find a spare PSU somewhere? I may have an old one but I'm not home til Thursday. Quote Link to comment Share on other sites More sharing options...
Willson Posted May 10, 2010 Share Posted May 10, 2010 Are you able to test the PSU with a multimeter? I've never done it, but I guess it must be possible. Quote Link to comment Share on other sites More sharing options...
Smallshinyant Posted May 10, 2010 Share Posted May 10, 2010 post 21 mate, tried exactly what you said and there's no beeps. The only thing that happens is the PSU fan and light come on, and the hdd light and power light (from the mainboard) are lit constantly. Sorry, its been a week of broken computers for me, forgot where we had gotten too. dont have a friendly neighbour you can borrow a PSU from to try before forking out do you? Quote Link to comment Share on other sites More sharing options...
bluecoup Posted May 10, 2010 Share Posted May 10, 2010 did you try screen connected to motherboard and not the gfx card ? Quote Link to comment Share on other sites More sharing options...
Homer Posted May 10, 2010 Author Share Posted May 10, 2010 Quick thought, have you tried reseating the CPU? I had an IBM unit do this once. failing that I'd agree 50/50 PSU mobo, can't be that hard to find a spare PSU somewhere? I may have an old one but I'm not home til Thursday. It's a 775 socket so doesn't have any pins (the cause of seating issues), it's been removed and replaced a cuple of times anyhow. Are you able to test the PSU with a multimeter? I've never done it, but I guess it must be possible. It's not possible to do this since with the main plug removed only a single 5v supply is active. It appears to require a signal from the mainboard to turn the rest of the psu on, which of course can't be done with the plug disconnected. Sorry, its been a week of broken computers for me, forgot where we had gotten too. dont have a friendly neighbour you can borrow a PSU from to try before forking out do you? Not likely, I doubt my neighbours even have computers did you try screen connected to motherboard and not the gfx card ? There's no GFX chip on the mainboard. My last hope is that Gav has a spare PSU, otherwise I will either buy a new PSU or mainboard. Personally I think it's the mainboard at fault... Edit - Yay, Gav has a spare and will be picking it up tomorrow, legend! Quote Link to comment Share on other sites More sharing options...
Supra Size Me Posted May 10, 2010 Share Posted May 10, 2010 Not sure if you've tried this yet but have you tried resetting the BIOS (usually a jumper near the battery on the mobo) check your mobo manual if you have one or research on internet. you'll have to make sure to disconnect mains power before doing it. just an idea to check out to eliminate from enquiries Quote Link to comment Share on other sites More sharing options...
Homer Posted May 10, 2010 Author Share Posted May 10, 2010 Not sure if you've tried this yet but have you tried resetting the BIOS (usually a jumper near the battery on the mobo) check your mobo manual if you have one or research on internet. you'll have to make sure to disconnect mains power before doing it. just an idea to check out to eliminate from enquiries Yeah, done that already (via jumper reset and removing the battery for 5 minutes). Quote Link to comment Share on other sites More sharing options...
Supra Size Me Posted May 10, 2010 Share Posted May 10, 2010 Prob your PSU by sound of it then bud Quote Link to comment Share on other sites More sharing options...
Scott Posted May 10, 2010 Share Posted May 10, 2010 I can't remember the pins but you can paperclip 2 of the PSU pins to get the PSU to fire up properly. I didn't use a paperclip, as I'm a wimp, I used a piece of wire instead IIRC it is Green to any of the GND pins. This should help http://www.certtalk.com/kb/article_images/702/fig-1.gif Quote Link to comment Share on other sites More sharing options...
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