Electronic equipment repair and service manual search discussion :: Topic review

jts1957 · Posted: Thu Aug 28, 2014 4:52 pm Post subject:

That's good. Now read a book.
Perhaps Black Beauty; The Bride Wore Black or The Dark of Night?

maritza · Posted: Thu Aug 28, 2014 4:31 pm Post subject: tv

Hey my tv just went black last night and won't come on No.sound or nothing it's just a black

[email protected] · Posted: Wed Dec 26, 2012 9:36 pm Post subject: vizio t.v.s

these t.vs are junk, on my second one, the first was given to me. Thought it was old because of poor quality pic. So went and bought a new one poor pic. in dark pictures all washed out. Had this junk not even 2/yrs. and color lines up and down one side of screen. Never again, what do you expect, made in taiwan. Bought a sony bavia best t.v. made.

Chancey · Posted: Thu Aug 30, 2012 6:22 pm Post subject: VW42L powerup problems

OK...Page 9-5 of the manual indicates the step by step procedure to diagnose the DC-DC Converter. The problem I am having, is when powered on...no powerup.

I checked the first step that claims J1 pin 10,11 and 12 should have 5v. In fact, it does. Next step says to power on the TV. The only indication I have of power up is the vizio orange light that turns white. Then u must check J1 pin 2,3,4 and 5 for 12v. (On the VW42L, pin 5 is not populated...must be in general for all TV;s that follow this design scheme.) There is no voltage on these pins and PIN 1, shows NO voltage for PSON and F2 is good that provides the 12v.

I found a 3.3v reference on the power supply, removed pin1 from connector on mainboard, to prevent back feeding voltage, and jumpered to trick PS to come on. BAM!! TV powers up on I have FULL functionality and menu's and the 12v is present on 2,3 and 4.

Here's my question...pin1 is not fed from the power supply but the main board. The walkthrough say's to check the PS. Is pin 1 not in fact a toggle that is triggered from the mainboard to power on the switch mode? With ALL that I have read on this thread...I am leary to pay $170 for the mainboard if it's the PS and vice versa. Am I on the right track in assuming it IS in fact the mainboard that is causing the problem? The reason I ask...I don't wanna have to be out $200 + dollars buying two boards when I proved out the display is in fact good.

DarkSyd2 · Posted: Thu Aug 30, 2012 5:54 pm Post subject:

Justmanuals · Posted: Thu Aug 30, 2012 4:27 pm Post subject:

The manual I have is complete. Right off the Vizio site.

DarkSyd · Posted: Wed Aug 29, 2012 3:23 pm Post subject:

Yup...that's a nice manual. Same as all the garbage copies I find for free. Goes to chapter 3 then skips to chapter 9

jts1957 · Posted: Sun Feb 12, 2012 1:07 am Post subject:

http://elektrotanya.com/vizio_vx42l_vw42l_hdtv10a_sm.pdf/download.html

gootch24@yahoo · Posted: Sat Feb 11, 2012 7:38 pm Post subject:

I know how to get manual.

Guest · Posted: Sun Feb 05, 2012 10:01 pm Post subject:

I have a VW42LHDTV10A Vizio, no picture no sound, no response from the remote or the bottons on the set. Have to unplug to turn off, My back lights are coming on and I get a white screen now that I replaced Two voltage regulators U7 and U33, Both fuses F1 & F2 are good. I am safe in thinking it is just a main board problem or could the inverters be bad. Can't find a service manual for it so I don't know how to test the inverters. Can anyone help??