Question about Proview PA40JK1A 40 in. LCD Television

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My proview 4000 makes chirping sounds when i turn it on. No problems with the picture quality. What could be the problem and is it worth fixing? Thanks E

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Posted on Jan 02, 2017

  • 8 Answers

SOURCE: proview rx 326 model 3200 tv sound but no picture

If the sound is working, I doubt the power supply is at fault. You can check with a simple voltmeter - red is positive, black negative - there should be 24VDC. There is an on-board regulator to drop the voltage for the CPU, etc, . THere is a green LED on the main board, so even if you don't have a Voltmeter, there is a visual indication that the power supply is somewhat functional.

I found a poor connection from the 24V power supply over to the inverter boards. I re-crimped the IDC connectors to the 24V supply and all was happy-town.

Posted on Jun 05, 2008

  • 2 Answers

SOURCE: proview rx 326 model 3200 tv sound but no picture

I just fixed my proview 3200 that doesn't have picture but with sound.
First, thanks for the tips I got from this forum. I checked the 24v from the power supply board and that's perfectly working fine. I then check the fuses in the Inverter board. There are 4 white fuses (2amp I guess, i cant remember) and 1 black fuse (1amp/76v just behind the wire connector going to the power supply board). The black fuse is the one that blown out on my tv. This fuse supplies power to the LM358A IC. I know its not right but I just solder a thin piece of wire to short circuit this fuse. I'm lazy to drive to RadioShack to find this fuse. :)
....and that worked beautifully. Check the picture attached for what I did.
66c42e5.jpg

Posted on Jun 22, 2009

praky16
  • 744 Answers

SOURCE: Proview 32' without picture or sound

hi first of all u should check ur transistor connections.Check your Horizontal and vertical output transistors.You should also check the horizontal and vertical yoke connections as well as your low voltage regulators.... if any of these got damaged u should purchase a new one.. but try to purchase with the help of a tv service assistant...
thank u!!!
rate me

Posted on Jul 07, 2009

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