hi everyone.been reading here for a while...ok i have this tv and it came from a pawn shop it was left on all the time and. a few days ago the screen stopped coming on. the tv turns on and off. but nothing from the screen. im thinking its the inverter.just wanted to see what should i check.thanks!
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Re: toshiba regza problems
Check the power and control voltages to the inverter; also check the fuse.Originally posted by timwebb22 View Post
PlainBillFor a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic. -
Re: toshiba regza problems
i checked the wires going to the inverter.there is no voltage going in to it.Comment
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Re: toshiba regza problems
See if the power supply is putting out the correct voltages.Originally posted by timwebb22 View Post
PlainBillFor a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.Comment
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Re: toshiba regza problems
the two connectors at the top goes to the inverter.that reads nothing.
the two at the bottom have correct voltages.Attached FilesComment
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Re: toshiba regza problems
It sounds like the main supply isn't turning on. To troubleshoot this we are going to have to start at the beginning.Originally posted by timwebb22 View Post
I'm going to need 3 pictures. I would like them to be at least 1000 x 1000 pixels; the site has a 2000 pixel limit, so don't go over that. It also helps if you can do this without flash.
The first picture is a little less critical - I need a picture of the back of the TV, showing where the cables go. The next two are more important. The first should be of the top of the power supply, but no flash, please. The second should be of the bottom; again, no flash. If there are any indications of the functions of the pins on the cables, it would REALLY help if that information is readable.
PlainBillFor a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.Comment
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Re: toshiba regza problems
.Attached FilesComment
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Re: toshiba regza problems
moreAttached FilesComment
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Re: toshiba regza problems
more...Attached FilesComment
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Re: toshiba regza problems
these pic good?Comment
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Re: toshiba regza problems
Not good enough. Bluntly, this is the sort of thing that makes me want to go play 'Angry Birds', cut down a tree, or download porn.Originally posted by timwebb22 View Post
This was my request:I asked for three pictures, I got seven. The first one was what I wanted - it showed the boards and the interconnections. The second showed the connectors, and it even showed the labels indicating the signals on each line - except they were obscured by the wires!!! As far as the overall shot of the top - useable, but not great. And for the picture of the bottom side of the power supply - nothing. Which is exactly the response I gave you.The first picture is a little less critical - I need a picture of the back of the TV, showing where the cables go. The next two are more important. The first should be of the top of the power supply, but no flash, please. The second should be of the bottom; again, no flash. If there are any indications of the functions of the pins on the cables, it would REALLY help if that information is readable.
PlainBillFor a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.Comment
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Re: toshiba regza problems
sorry about that. i thought it uploaded.Attached FilesComment
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Re: toshiba regza problems
Ouch!!!! What happened to the lower left corner of that board? That circuitry should control the main supply.Originally posted by timwebb22 View Post
The 8 pin connector in the upper left area of the board appears to be P806. Pins 1, 2, and 3 are control signals.What does it say about those pins on the top of the board?
PlainBillFor a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.Comment
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Re: toshiba regza problems
it looked like that spot was repaired.
here's the 8 pin plug.Attached FilesComment
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Re: toshiba regza problems
What is the voltage on pin 3 of the 8 pin connector (use pin 3 as the ground point). Test with the TV plugged in, and the TV switched off, then on.Originally posted by timwebb22 View Post
PlainBillLast edited by PlainBill; 10-01-2011, 06:47 PM.For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.Comment
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Re: toshiba regza problems
3.25vComment
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Re: toshiba regza problems
Originally posted by timwebb22 View Post
With the TV on and off? (I'm not a mind reader.)
A wee bit of information. This TV has a dual power supply. The standby supply is on whenever the TV is plugged in. The output of the standby supply powers a small part of the main board which 'looks' for signals from the remote - such as the power button being pressed.
When the power button is pressed on either the remote or the front pane of the TV, the main board sends a signal to the power supply, turning on the main supply. The joker is the 'power control' signal varies from manufacturer to manufacturer and from model to model. USUALLY it's called PS_ON; and if it's at 3.25 volts, the main board is turning the main power supply on. One set I was working on recently called it 'Standby', and when it was high, it turned the main supply off. These jokers call it 'Power_Sig'.
The idea is, if it changes every time you press the power button, but the power supply never comes up, it's a power supply problem. If it never changes, it's a main board problem.
Just to make things more interesting, about midway between the 6 pin connecotr and the transformer labeled TDK X 0729 is a short reddish brown cylinder. That is a fuse. Check it. Look for other fuses and check them.
PlainBillFor a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.Comment
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Re: toshiba regza problems
oh.with the tv on.Comment
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Re: toshiba regza problems
ok. i redid the test cause i noticed my meter wasn't functioning like it should.so i went and got my fluke and got a different reading. 44.1v. i know i should have used the fluke in the first place.Comment
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Re: toshiba regza problems
OK, I described the two possible behaviors above. You're on your own.Originally posted by timwebb22 View Post
PlainBillFor a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.Comment
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