Polaroid FLM-3732 power up problem, replacing capacitors does not do anything?
I have a polaroid FLM-3732 lcd tv and when trying to turn on the red indicator light goes from red to blue as normal but the screen is black. There has been numerous reports of this happening, and it can be traced to a few bad capacitors in the control box/power supply, and when replaced the tv works fine. Theres probably 300 people online who said this have happened and the repair worked. So i try and do the same, but there are no bad capacitors. I replace the ones known to go bad anyways, and it doesnt fix the problem. So to further investigate I unplug the output leads to the screen, 10 or 12 pin I believe, and turn the tv. What happens is the meter shows 24.5Vdc at initial start up, then after a few seconds there is a minute click somewhere on the back of the tv, and the voltage starts to fall quickly until after a minute or so theres no voltage. So if anyone knows what this could be, or how to figure it out please let me know. I am very familiar with electronics and have the user manual as well. Thanks
Comments
Is there sound? Because if there is sound but no picture check the inverter for bad caps!
If that's not the problem, then you're better off getting a new TV! Polaroid TV's are junk. I see so many questions about their power supply and inverter failures!
The most reliable brand i've ever seen is Panasonic. They make 32" to 37" LCD's and 42" and larger Plasma's! Outstanding TV's!
This Site Might Help You.
RE:
Polaroid FLM-3732 power up problem, replacing capacitors does not do anything?
I have a polaroid FLM-3732 lcd tv and when trying to turn on the red indicator light goes from red to blue as normal but the screen is black. There has been numerous reports of this happening, and it can be traced to a few bad capacitors in the control box/power supply, and when replaced the tv...
You are more familiar than I with the electronics of the TV. That said, I have sold TV sets for different stores for many years. The situation you describe sounds like there is a short circuit somewhere and there is a protection function that keeps the short from damaging the TV.
Guess that isn't much help to you since I have no idea to tell you what to look for or where to look. That used to happen to TVs that experienced a power surge.
You must accelerate at a precise speed of 88 miles per hour