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Home Today’s Posts Search. Woke up the other morning and the light was flashing this pattern and just repeats forever. I tried unplugging it for a while and same thing. Any input or help further troubleshooting is much appreciated. Should I start trying to test the voltage regulators datssheet the main board or are there other things I should check first? Check voltage at fuses, capacitors?
Stock/Availability for: 7805CD2T
I have a digital multimeter and know a little, but not huge into hardware fixing. Vizio appear to have lots of problems with their sets reading through the recent posts on this forum. Yeah I think these are all on their last leg. Then test the connectors for voltage again. Disconnect everything from the power supply except the mains input and connect the resistor between pin 11 and pin 1. This should bring up the 12V and any other DC output supply on the power supply.
Edit I see 18V on CN Thanks for the input. I am not near the TV now, but will post back later today when I can test this. I would love for the power supply to be bad since that seems an easier fix than the main board. Originally Posted by budm: I tested the power supply board as directed. I assume this means the power supply is working.
What should I check next? F1, F3, F5, and may be F2 and F4 some where else on the board. It’s this board here: Continuity tests good across them. Seems like a main board problem. Any idea what to trouble shoot on there. Should I start checking the voltage regulators? I did try unplugging the wifi, Bluetooth, and t-con.
It does the same thing. Originally Posted by stealth Looks like most of these are 6 pin regulators.
I only see U24 3-pin. I’m not sure what the easiest way to list this is.
(PDF) L7805CD2T Datasheet download
Is there a standard for numbering the order of the pins? Location – Labeling Top row pins Bottom row pins Datasheets are guesses. I have little electronics knowledge at this level. U32 – M11 G 0. U1 – L G 5. Not sure this 7805cx2t is very small 2 pins on top 3 on bottom and the voltage was changing on the top 2 pins.
CD2T – ON – IC Chips – Kynix Semiconductor
Let me know if this means anything. I am having a hard time understanding the datasheets. Thank you for the help. Hello Stealth71, Pin 1 of the IC often has a circle next to it like in the picture attached.
Then the pin numbers follow the same layout. Can you link your voltages to each pin number which would hopefully be more meaningful.