I have a 42 in Proscan TV. The power Supply has a transformer that is humming. I have found 1 source with witch to find this power supply but there are no places that I can find the Transformer. Here is all the info I have.
HLP-45A01 Power Supply RSAG7.820.968/ROH
Transformer is named BCK-28-001D/ROH and on the power supply board it has a spot marked T803.
There is a diode that turns lights up green whenever the transformer is humming. it is named VD824
SOURCE: tv turns itself off as
This problem usually occurs as a result of overheating in units. The unit is meant to be placed in a location where enough breeze will be accessible to avoid over heating in the unit.
Hope this solution has been helpful?
SOURCE: I have a 42" Proscan
It sounds more like a backlight problem to me. The first thing I would try before tearing the set apart is simply unplugging it for about five minutes and plug it back in. TV's do weird things sometimes and need to be reset. Odds are, if you have to open up the TV, there's not a whole lot you can do anyway. Check the backlight on signal and also see if your inverter is working. I would suspect that if you're strobing your backlight is probably dying. In that case all you can do is replace the panel; you could try finding a replacement backlight and installing it, but I wouldn't advise even trying this. Replacing backlights is quite a task if you're not familiar with televisions. Anyway, best of luck.
SOURCE: My Proscan 40LD45Q powers on then flashes and
Hello,
It's the problem of overheating in the power supply board of the TV.on the power supply board of the TV there are few capacitors and IC.any of this ic is got short or may be weak.so due to this when you start the TV the current passes from electric outlet to the power supply board of TV.but when the current passes from that weak/faulty part at that time current gets stopped or slow and the board overheats and TV shuts off. this is a common problem faced by many other users too.the possible option to solve this issue is to check the power supply board by a meter and continuity tester and replace the faulty component on the board which is short due to which power supply board is getting overheated.its bit technical job but yes its not at all a costly repair to do or get it done by the technician. for required parts it can be easily available from local electronic hardware shop.
Do take care in solving the problem of the television....
SOURCE: I have a Proscan 47LC55S240V87
hi,
You can suspect three things in you tv for this fault .. One is the Balck light inverter board And the disply driver ( T- con ) Board. You have mensioned that there is back light when the picture become blank. You have to check the same one more time and confirm that the back light is working perfectly. If you seems the backlight is ok then the problem is with t-con board or faulty electrolytic capacitors in the power supply board . you have to check for any faulty budged electrolytic capacitors in the inverter board and in the power supply board. IF found such capacitors replace the same will solve the problem. If there is no such capacitor found then you have to check the T-CON board.
T - con board is one which drives the pixels in the rows and colums of the LCD panel. You will find this T-con board in the bottom middil side of the TV. It will be coverd by a metal case or an aluminium ( to protect from inerfearence). There will be a connection from the mother board to this board And other two connectionsfrom this board will go to the LCD pannel. There is no repair possible with this T-con board. It should replaced as a moudule. Have added the picture of faulty budged electrolytic capacitors how its looks , inverter board and T-con board.
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i have the same exact problem with my proscan. have you found a solution? also my picture flickers
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