Vizio VT - Recent Questions, Troubleshooting & Support
Vizio VT470M no picture, no sound, no backlight. Power supply board looks good all voltages appear correct.
Im having similar problem and with my limited knowledge of lcd tvs and the voltages ALL being good except the pwr on or sw on voltage from the main board to the power supply which tells it to switch everything on Im guessing that something is going wrong on the main board. In the condition where it freezes it (the power on V) which switches everything on i get varied voltages such as 2.5 or 3 or (the normal 5v) and then when nothing powers up (blank screen) i read 0v on pwr on voltage but all my other voltages are corect (24v to inverter, 12 v to main board, 5v, etc.) Im guessing from researching this is that there is in improper voltage somewhere in the main board circuit. I have been unable to find it so i may order another board and post back.
I have a vizio model vt420m. When I turn it on the
Hi, it seems a main board issue but for better assistance you can contact Vizio technical support using the information shown bellow:
Email:
[email protected]
Tel: (877) 698-4946 Fax: (949) 585-9563
Hours of operation: Monday - Friday: 6 am to 9 pm
Saturday - Sunday: 8 am to 4 pm
Please have your VIZIO model number, serial number, and date of purchase available before you call.
No picture or sound.
Hi, it seems you have a faulty mainboard, but the better and more secure option to avoid spending money unnecessary it's to contact directly to Vizio technical support:
Email:
[email protected]
Tel: (877) 698-4946 Fax: (949) 585-9563
Hours of operation: Monday - Friday: 6 am to 9 pm
Saturday - Sunday: 8 am to 4 pm
Please have your VIZIO model number, serial number, and date of purchase available before you call.
I've owned a Vizio VT420M for just over 13 months.
The flickering is most likely due to a faulty fluorescent backlight. Once the bulb heats up the flickering usually goes away. Some bulbs are easier to replace than others so I would contact your local TV repair shop.
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