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ffury
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Last Activity: 10-11-2019, 05:25 PM
Joined: 05-15-2011
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  • 3.3V rail is 4.08V Cant load Windows

    MSI K8N Neo4-F socket 939

    I have replaced the 5 bulging caps which were 6.3V 3300uf. All other caps on board look good and I detect no problems with my Mat Eleectronics ESR meter. The board boots to bios fine and shows the 3.3V rail is 4.08V. I checked it with 2 seperate power supplies.
    The board will not load windows 7 or XP on a PATA or SATA drive. I cant boot to PE or a linux live disk. I can boot Hirens and run HDD Regenerator on the drives though.
    It's a mystery. What controls the 3.3V rail????
    All input is welcomed on how to proceed.
    I have not...
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  • Re: 270uf reads 318uf

    Thank you for your input. You have made some very intersting observations. I will have to go back and look at the caps on the power supply and see if they are low ESR. I think you are right about the Inverter being OK.
    I need to know more about the T-com board and what it does.

    What is a T-Con board??????
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  • Re: 270uf reads 318uf

    I am the original owner of the TV purchased new. The Caps are the originals.
    Thank you for your comments. All comments are welcomed.
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  • Re: 270uf reads 318uf

    The caps in question are brand name Nichicon 35V 270uf (m). There are four of them mounted on a CPT 320WA01C Inverter for an Akai LCT3201AD LcdTv. The TV will take 3 minutes and 20 seconds to come on to the splash screen. This brand has a MLT169b power supply notorious for bad caps. I have replaced all the filter radial caps on the power supply and all the larger caps on the mainboard. The TV still has a 3 minute delayed start. I've moved on to checking the Inverter. I feel like this is a cap problem. My Mat Electronics ESR meter isnt the best but does work....
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  • ffury
    started a topic 270uf reads 318uf

    270uf reads 318uf

    I pulled a 35V 270uf cap from an Inverter board and tested it with a capacitance meter. It reads 318uf. Is that within tolerance. When a cap goes bad does the reading on capacitance go high or low?
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