At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
First off 3.2 is the correct voltage for the PSON so we know the main board is sending the signal back to the power supply instructing it to come out of sleep mode and go to work, if your other power supply voltages are ok then you can rule out the power board. A gut feeling is you have a bad main board but its only a guess without doing some testing on the TV...you said you don't have sound, is that because you can't tell what input the set is on?...also have you tried the flashlight test?
Iv the voltages are low, pull the power line from each of the other boards to see which one is dragging the voltages down. If none ovf the voltages return to the correct value, then the power supply board is gone. You can get all the repair parts you need from here: http://www.shopjimmy.com/
Use caution, some older Dell machines used a non standard, proprietary pin-out on the 20 pin connector ALso the 6 pin is suspect. If you connect a regular ATX PSU, you will fry the MoBo. Look here DELL ATX motherboard Power Supply pinout
Having worked with Dell computers before I have found that the amber light usually means bad power supply. Get a replacement power supply from a know working Dell machine as their power supplies are different from standard ATX power supplies.
You cannot test the power supply on the bench just by connecting it to the mains power. You need to know which pins on the connector to activate the power supply and you need to connect a load to the power leads. The best way to test the power supply is to leave the power unit connected to the computer power up the computer and test a spare 4 wire power connector with a multi-meter. Leave the other power leads connected to the various drivers. If computer's power LED should light up then test the voltages. The Red and black wire should read 5 volts. The Yellow and black wire should read 12 volts. If the power LED does not light up, check the mains lead in another appliance to see if the mains lead is OK. If the mains lead is OK then most likely the switch mode power supply has died.
Sounds like a power supply. You are getting the standby voltage and not the switched. plug all your wires in except the big 20 or 24 pin motherboard connector, take a small wire and short the green (PSU_ON) to black (ground) wires. This will simulate the computers "ON" signal. The fans should all spin up and your plugged in accessories should work, which means bad motherboard, if not bad power supply.
×