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#1
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Voltage fluxuations on the -12 side GA7VM400M
I was trying to run a new XP2600+ on a GA7VM400M (Rev 1). When it would
startup I would get a voltage warning on my monitoring SW (I can't remember the name of it.... it is a good one... names escape me...) It showed the +12 side at 12.5 or 12.6V. The -12 voltage, however, was running on the low side 3 to 6 volts (and fluxuating). I have never seen that before. I did double check and noticed that the Antec P/S (known good) was only 300Watts, but I was only trying to run: XP2600+ on a GA7VM400M mobo Win98SE Sony CD R/RW 1 floppy 1 Maxtor 120 Gb drive (7200 RPM) It came all the way up into Windows. I could even silence the alarm and do stuff if I had wanted to. I had a 420 Watt, high quality P/S in another system I was putting together, but I don't recall ever actually testing this P/S. I bought it ($35 or $40) and didn't get around to using it. Anyway, it would only cause the sysem (fans, lights, etc) to run for a fraction of a second and then it would be dead quiet. Would the odd voltage indications be indicative of bad voltage regulators or just an underpowered power supply (and a bad 420 Watt unit)? I did get the board used... but from a guy I've known for years who has only sold me good parts. I initially only thought I was having thermal problems, but once I put a GOOD (non AMD) cooler on there, I have had time to look at the rest of the monitoring data and worried about the voltage. TIA KWW |
#2
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KWW wrote:
I was trying to run a new XP2600+ on a GA7VM400M (Rev 1). When it would startup I would get a voltage warning on my monitoring SW (I can't remember the name of it.... it is a good one... names escape me...) It showed the +12 side at 12.5 or 12.6V. The -12 voltage, however, was running on the low side 3 to 6 volts (and fluxuating). I have never seen that before. I did double check and noticed that the Antec P/S (known good) was only 300Watts, but I was only trying to run: Don't concern yourself with the -12V readings. The +12V line is important. A 300W Antec should be fine, with the hardware you list below. XP2600+ on a GA7VM400M mobo Win98SE Sony CD R/RW 1 floppy 1 Maxtor 120 Gb drive (7200 RPM) It came all the way up into Windows. I could even silence the alarm and do stuff if I had wanted to. I had a 420 Watt, high quality P/S in another system I was putting together, but I don't recall ever actually testing this P/S. I bought it ($35 or $40) and didn't get around to using it. Anyway, it would only cause the sysem (fans, lights, etc) to run for a fraction of a second and then it would be dead quiet. If you bought a PSU for $35-40USD, I have my doubts about it being a high quality unit. |
#3
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Actually, I found the price info on the P/S. $55. It is a Turbolink CWT
420ATX. I am going to check it out on another system. OK about the -12 being unimportant, but why, then, did the warning SW flash red and alarms go off? Just spooky... Thanks, -- KWW "S.Heenan" wrote in message news:OnNlc.366968$oR5.250946@pd7tw3no... KWW wrote: I was trying to run a new XP2600+ on a GA7VM400M (Rev 1). When it would startup I would get a voltage warning on my monitoring SW (I can't remember the name of it.... it is a good one... names escape me...) It showed the +12 side at 12.5 or 12.6V. The -12 voltage, however, was running on the low side 3 to 6 volts (and fluxuating). I have never seen that before. I did double check and noticed that the Antec P/S (known good) was only 300Watts, but I was only trying to run: Don't concern yourself with the -12V readings. The +12V line is important. A 300W Antec should be fine, with the hardware you list below. XP2600+ on a GA7VM400M mobo Win98SE Sony CD R/RW 1 floppy 1 Maxtor 120 Gb drive (7200 RPM) It came all the way up into Windows. I could even silence the alarm and do stuff if I had wanted to. I had a 420 Watt, high quality P/S in another system I was putting together, but I don't recall ever actually testing this P/S. I bought it ($35 or $40) and didn't get around to using it. Anyway, it would only cause the sysem (fans, lights, etc) to run for a fraction of a second and then it would be dead quiet. If you bought a PSU for $35-40USD, I have my doubts about it being a high quality unit. |
#4
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KWW wrote:
Actually, I found the price info on the P/S. $55. It is a Turbolink CWT 420ATX. I am going to check it out on another system. OK about the -12 being unimportant, but why, then, did the warning SW flash red and alarms go off? Just spooky... CWT=ChannelWell Technology At one time they made power supplies to Antec's specs. I do not know if this is still the case. Heroichi(HEC) was another. Since the -12V line is not used, it's not under load. Remote sensing of output voltage does not occur and output voltage may fluctuate. I just tested mine with Speedfan. It's at -12.16V and holding solid. |
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