Dell Optiplex SX260 Computer Won't Boot Up
 

Hi,

Here is an update:

Using a "lo-pwr ohms" (low voltage) B&K meter, I measured about 5.5
ohms across the bank of 2200/6.3 caps numbers C146, C147, C148, etc. Note:
This reading is not caused by charging. I switched to "hi-pwr ohms" and the
reading dropped to 4.4 ohms. Note: 412mV measured (via a DMM) across B&K
meter probes during "hi-pwr" ohms reading.

It is possible that one or more of these caps is the cause of this low
ohms reading (not normal). There are about 9 or 10 caps in parallel.

I will put this on the side for now, and wait for more "freedback".

Thanks in advance, John

Dell Optiplex SX260 Computer Won't Boot Up
 

On Fri, 15 Feb 2013 16:31:56 -0500, wrote:

Hi,

Here is an update:

Using a "lo-pwr ohms" (low voltage) B&K meter, I measured about 5.5
ohms across the bank of 2200/6.3 caps numbers C146, C147, C148, etc. Note:
This reading is not caused by charging. I switched to "hi-pwr ohms" and the
reading dropped to 4.4 ohms. Note: 412mV measured (via a DMM) across B&K
meter probes during "hi-pwr" ohms reading.

It is possible that one or more of these caps is the cause of this low
ohms reading (not normal). There are about 9 or 10 caps in parallel.

Not sure exactly what that meter is telling you, but if you have high
ohms (more specifically, high ESR) in parallel caps then they are ALL
high. If those numbers are anything like the ESR then they are
definitely U/S.