Question about BenQ DX 650 Multimedia Projector

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As soon is turn on has horizontal lines and intermitent proyection

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  • charlieflore Feb 06, 2010

    How do I check that?

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  • Master
  • 1,768 Answers

1. check the cable from the PC to the DLP
2. disconnect and reconnect and the re- sync the DLP to the PC
3. You may have to re install the DLP or update the drivers for the device

Posted on Feb 07, 2010

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  • BenQ Master
  • 15,969 Answers

There is a color wheel that is in those units and there is also a decoder it could be either one. You can check the color wheel to see if it is damaged. THe bad thing is that they are expensive. Especially if it is the decoder.

Posted on Feb 06, 2010

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1 Answer

What causes my RCA TV to turn off as soon as it is turned on?


Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/

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you have a problem with signal or voltages tht goes to 3 proyection tubes ,are you tech?? if yes used a voltmeter to check voltages to high voltage horizontal power , you have problem with deflection area or maybe power supply

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It is my guess that you have some intermitent solder connections in the Vertical output circuit.
Hope this helps,
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Hi,
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500e759.jpg

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1 Answer

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this not horizontal this is vertical line. this means defective vertical output IC and 1.5ohms resistor, Replace the two parts then test run, and happy viewing!

Thanks!

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1 Answer

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how old is the tv ??
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Green screen with almost horizontal zigzag lines


Is good that you hit it and it reacts,very likely you have loose conections in different places but for the distorted picture you need to check the horizontal driver transformer and flyback after that is corrected you need to check the complete chassis for loose conections.Take your time.Good luck.

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1 Answer

Horizontal lines


http://home.tiscali.nl/m.majoor/tv__matchline_service_mode.htm Sounds like you need go this site, enter codes and re callibrate your TV to the settings. If this does not work - then sounds like you need tv repair man replace caps or solder bad joint. Miyan sung, former philips rep man, Korea.

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