Ps51d450

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  • Jamesb79
    New Member
    • Apr 2021
    • 2
    • United Kingdom
    #1

    Ps51d450

    Hi, Firstly I have learned a lot using this forum, I have an old PS51d450 it's been working perfect until last week, where it turned off and I had no picture or sound. Using this forum I discovered a short on the X main board, all other board test fine and giving me proper voltages across them. I replaced the x main last night and the TV works again. Picture is near perfect. But one thing I forgot to check was the VE voltage from the X Main test point. When I checked this I am only getting 86v from the VE test point on the X main but the ribbon cable coming from the Y main is giving it 100v which is close to what the panel sticker states 101v.

    Because the TV is working again, I have switched it back off incase it does any damage until I find out if I need to adjust the bottom pot so the VE test point on the X Main should be set to read 100v the same as the top and feed from the Y main. Also I noticed there is some amount of heat from the big heatsink on the left of the X main so much that after only 10 mins you can't keep your finger on the heatsink is this normal? I know to TV gave off a lot of heat before so this might be normal but thought I would ask. Thanks
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