My proscan plded3992a-c is flickering - Proscan Televison & Video

The Knight

• 76851 Answers
• Posted on Mar 23, 2015

SOURCE: Proscan LCD flat panal model #plded3992a-c. Hello. I turn monitor on, blue screen is dim and blinks. Will not hold picture. Power? Or bad card?

Bad card. Electro help

The Knight

• 76851 Answers
• Posted on Aug 16, 2016

SOURCE: I have a Proscan plded3992a . When the TV cuts on you can see and hear everything, currently via hdmi. The screen however is dim. Still visible and blinks steadily to normal brightness.

Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.