hey guys n gals..ive a toshiba 32AV555D that will not display any picture..it has audio & the backlights are on..it will display programme guide & menu etc but no picture.. ive tried downloading schematics from electrotanya but no pdf in rar filesthx
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Re: toshiba regza no picture
If it displays the OSD overlay - i.e. menus - then the problem is with the main board.
Check all LDOs on the main board, and any fuses you can see.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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Re: toshiba regza no picture
Originally posted by sienoki View PostCheers tom..will start looking over mainboard..thx fella
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Re: toshiba regza no picture
Originally posted by sienoki View PostI cant find any schematics for this mainboard & there is no available replacement so im gonna have to put it away till i get some more time as i dont know where to start probing etc..thx
I'm going to Leeds Uni in about 5 months so keep a stash of TVs you can't fix for me .Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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Re: toshiba regza no picture
Originally posted by tom66 View PostYou know what an LDO looks like?
I'm going to Leeds Uni in about 5 months so keep a stash of TVs you can't fix for me .
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Re: toshiba regza no picture
Originally posted by sienoki View PostR these the LDO,s..thxPlease do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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Re: toshiba regza no picture
Originally posted by tom66 View Post1,2 and 5 yep. Check all pins and note part # down.
1. 5.02vdc
2. 4.88vdc
3. .045vdc
4. .041vdc
IC950 same part no & brand..bottomside
1. 4.81vdc
2. 4.88vdc
3. .027vdc
4. .018vdc
IC602=033DNA1=SHARP..bottomside
1. 18.07vdc
2. 10.14vdc
3. .029vdc
4. -.002vdc
all measured with power on black probe to chassis screw & red probes to each legs..thx
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Re: toshiba regza no picture
Originally posted by sienoki View PostIC951=033ENA1=SHARP..thats topside
1. 5.02vdc
2. 4.88vdc
3. .045vdc
4. .041vdc
IC950 same part no & brand..bottomside
1. 4.81vdc
2. 4.88vdc
3. .027vdc
4. .018vdc
IC602=033DNA1=SHARP..bottomside
1. 18.07vdc
2. 10.14vdc
3. .029vdc
4. -.002vdc
all measured with power on black probe to chassis screw & red probes to each legs..thx
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Re: toshiba regza no picture
Originally posted by sienoki View PostThe wire pin outs?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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Re: toshiba regza no picture
Originally posted by sienoki View Postthe tab pins readings..
IC951=from OL to 3.27vdc
IC950=same reading as IC951
IC602=from OL to 3.28vdcPlease do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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Re: toshiba regza no picture
Originally posted by sienoki View PostGot fluke77 on VDC quick O.L on display then the reading..thx
Are there any other regulators? Like these:
http://www.ictradenet.com/models_pic...PAK,TO-252.jpg
http://upload.wikimedia.org/wikipedi...4/4f/D2PAK.JPG
http://www.national.com/images/pkg/mp04a.jpg
http://media.digikey.com/photos/Rohm...B1132T100R.JPG
Anything you see that looks like those could be a regulator, so note down the part # and test the pins.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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