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Re: tv is too dark
You didn't say how old your TV is. If it's very old the picture tube could be weak.
IF not then there is a screen adjustment on the flyback transformer that you might try to adjust. Sometimes you can access this adjustment without removing the back cover. If you see an adjustment through a hole in the back of the cabinet marked "SCREEN" then you might try turning this control clockwise while watching the picture in a mirror. Only a slight adjustment may be needed. Don't make it too bright or the set may shut down or have small white (retrace) lines in the picture.
If you have a projection TV then dust on the three picture tube lenses will darken the picture.
These are general statements that apply to different TV's. I assumed that this is a direct view 32 in. TV.
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Please view my Tips & Tricks. I have a tutorial which will help you correct this problem. Your Screen Voltage is too low. You will need to take the back of the TV to fix this. It's not hard, just be careful... the TV must be powered on during the adjustment. I hope this was helpful, best wishes.
you can bring more brightness by removing cover on your tv and then you will see ther 2 button ther in back of your tv one is FoCUs and other is G2 rotate the G2 button till you see more brightness on your screen put the cover back and that is if you dont know to do that go to one authorised service
Depending on the age of the TV, it might be power supply related. Check Mains smoothing cap or others in the area. Video circuit is also a possibility. Tube would be the last option to look into depending on the age of the set, Good luck,JUS004
Open up the back of the set but be very carefull. Notice a large black block with a large red wire that runs up to the picture tube. on one side of that large block where the thick red wire is comming out of are two controls, one should be marked focus or F and one should be marked screen or S. With the set operating normally and not touching anything else, slowly turn the control marked screen or S clockwish till the picture gets bright enough. If you go too bright the set will shut down or you see small thin white lines so back down on the control. then touch up the focus and your good to go. good Luck.
for this brightness problem actually came out from flyback transformer...so, before you spend and waste your money, try to adjust at back of your tv first. But if you aren't an expert, better ask technician to do because that transformer supply a very high voltage....there's two adjustment point at flyback transformer, one point for focus and the other one for brightness! try first...