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Dell Precision T5500 Desktop died - any chance of repairing?
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<blockquote data-quote="berntd" data-source="post: 3886" data-attributes="member: 100"><p>Hello,</p><p>Calling all Dell experts <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> </p><p></p><p>My trusty Dell T5500 Machine died yesterday while in use. It suddenly just stopped and the power went off like a power failure.</p><p></p><p>What I have done so far:</p><p>I forced the power supply to on and measured all voltages. They are all ok.</p><p>I can see the power backup LED illuminated on the motherboard.</p><p>The machine reacts to the power button and comes on for approximately 8 seconds. The fans spin for that time and the power stays on for that time.</p><p></p><p>It has 4 diagnostic LEDs (very cool!). </p><p>When turning on, these LEDs get to 1,2 flashing and 3,4 off.</p><p></p><p>From the Dell service manual I traced that the machine gets to:</p><p>State: S12 </p><p>State Name: CFG</p><p>State Assignment: Resource configuration</p><p>State description: System resource configuration in progress.</p><p></p><p></p><p>I have so far tried:</p><p>Removed all RAM modules and installed them one by one into slot 1 - no change</p><p>Removed all add on cards - no change</p><p>Removed the CPU chip - no change</p><p>re-installed the CPU chip + new paste etc - no change</p><p>BIOS CMOS battery removed to allow full reset - no change </p><p></p><p>No burning smells detected (I have a good nose for that)</p><p>No bulging capacitors found.</p><p></p><p>I forced the power supply to on just after pressing the power button. The supply then stays on but the system still gets to state S12 and shuts down all the fans and all LEDs. </p><p></p><p>Could it still be power supply related, despite the voltages all being ok? I opened the supply but there was nothing burned in there.</p><p>I do not have another power supply to just try for this as it is custom Dell. I tried using an ATX power supply I have here but that immediately clicks off when attempting a power up.</p><p></p><p>Is there anything else I can try to diagnose this or is this just the end of it?</p><p></p><p>Best regards</p><p>Bernt</p></blockquote><p></p>
[QUOTE="berntd, post: 3886, member: 100"] Hello, Calling all Dell experts :) My trusty Dell T5500 Machine died yesterday while in use. It suddenly just stopped and the power went off like a power failure. What I have done so far: I forced the power supply to on and measured all voltages. They are all ok. I can see the power backup LED illuminated on the motherboard. The machine reacts to the power button and comes on for approximately 8 seconds. The fans spin for that time and the power stays on for that time. It has 4 diagnostic LEDs (very cool!). When turning on, these LEDs get to 1,2 flashing and 3,4 off. From the Dell service manual I traced that the machine gets to: State: S12 State Name: CFG State Assignment: Resource configuration State description: System resource configuration in progress. I have so far tried: Removed all RAM modules and installed them one by one into slot 1 - no change Removed all add on cards - no change Removed the CPU chip - no change re-installed the CPU chip + new paste etc - no change BIOS CMOS battery removed to allow full reset - no change No burning smells detected (I have a good nose for that) No bulging capacitors found. I forced the power supply to on just after pressing the power button. The supply then stays on but the system still gets to state S12 and shuts down all the fans and all LEDs. Could it still be power supply related, despite the voltages all being ok? I opened the supply but there was nothing burned in there. I do not have another power supply to just try for this as it is custom Dell. I tried using an ATX power supply I have here but that immediately clicks off when attempting a power up. Is there anything else I can try to diagnose this or is this just the end of it? Best regards Bernt [/QUOTE]
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Dell Precision T5500 Desktop died - any chance of repairing?
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