[TechAssist] Re: Envision 15" Panel computer monitor, EN-LM500

From: "mike wilson" <mykeelike@xxxxxxx>
To: techassist@xxxxxxxxxxxxx
Date: Mon, 24 Feb 2003 23:18:44 +0000
fixed an LM700 with the exact symptom. pix would blink out after  a few 
min.it was the power supply.external power supply CH-1205.we actually found 
intermittent D101 located near lone transistor on heatsink.however envision 
was very easy to communicate with and would have sent us a new supply.



Mike Wilson
A.M. Stereo & Video
Seattle WA.





>From: "David Lessard" <mrfixit@xxxxxxxxxxx>
>Reply-To: techassist@xxxxxxxxxxxxx
>To: <techassist@xxxxxxxxxxxxx>
>Subject: [TechAssist] Re: Envision 15" Panel computer monitor, EN-LM500
>Date: Mon, 24 Feb 2003 15:11:33 -0500
>
>
>Back-light is off to one side of the LCD. Usually a straight-tube shaped
>bulb the length of the LCD, halogen I think. Sometimes you can see (very
>faint) the LCD image when the light is out. If this bulb doesn't light then
>you will not beable to see anything. This may be the problem your
>experiencing, I've seen this a couple of times on laptop computers. Hope
>this helps.
>
>David Lessard
>50 Harrison Street
>Alexandria Electronics
>Ontario, Canada
>K0C-1A0
>mailto:mrfixit@xxxxxxxxxxx
>
>-----Original Message-----
>From: techassist-bounce@xxxxxxxxxxxxx
>[mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of Kevin
>Sent: Monday, February 24, 2003 2:37 PM
>To: techassist@xxxxxxxxxxxxx
>Subject: [TechAssist] Re: Envision 15" Panel computer monitor, EN-LM500
>
>
>
>Yes I did monitor the P/S and there was no change when the video was
>flashing off and on.  It does sound like the micro may be at fault for
>the pwr switch problem.  How do I know if it is the back-light turning
>off and on, causing the video to flash off and on?  TIA
>
>Kevin Wilks
>Kevin's TV & Video Repair
>Penticton BC Canada
>kevintv@xxxxxxx
>
>
>-----Original Message-----
>From: techassist-bounce@xxxxxxxxxxxxx
>[mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of David Lessard
>Sent: Monday, February 24, 2003 6:58 AM
>To: techassist@xxxxxxxxxxxxx
>Subject: [TechAssist] Re: Envision 15" Panel computer monitor, EN-LM500
>
>
>Kevin, All kidding aside, sometimes a "gentle" tap will causes an
>intermittent to act up, the hard part is finding it. Were you able to
>monitor the PS when the unit was turning on and off? Was it the
>back-light
>that was turning on and off or was the entire unit shutting down? Not
>being
>able to turn the unit off once in a while may indicate a micro problem.
>These monitors aren't very servicable, all those VLSI chips inside and
>all,
>good luck.
>
>David Lessard
>50 Harrison Street
>Alexandria Electronics
>Ontario, Canada
>K0C-1A0
>mailto:mrfixit@xxxxxxxxxxx
>
>-----Original Message-----
>From: techassist-bounce@xxxxxxxxxxxxx
>[mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of Bil Green
>Sent: Monday, February 24, 2003 3:34 AM
>To: Kevin
>Subject: [TechAssist] Re: Envision 15" Panel computer monitor, EN-LM500
>
>
>
>We use a 10 pound sledge. Just a lite tap usually does it.
>
>--
>Best regards,
>
>Bil Green
>2001 TV VCR
>Mammoth Lakes, California
>760-934-2001                          mailto:tv.vcrrepair@xxxxxxxxxxx
>
>
>Monday, February 24, 2003, 12:17:43 AM, you wote:
>
>
>K> I will try hitting it HARD.  Will a baseball bat do?  How about a
>hockey
>K> stick?  Thanks for the laugh.
>
>K> Kevin Wilks
>K> Kevin's TV & Video Repair
>K> Penticton BC Canada
>K> kevintv@xxxxxxx=20
>K> =20
>
>K> -----Original Message-----
>K> From: techassist-bounce@xxxxxxxxxxxxx
>K> [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Bil Green
>K> Sent: Sunday, February 23, 2003 11:35 PM
>K> To: Kevin
>K> Subject: [TechAssist] Re: Envision 15" Panel computer monitor,
>EN-LM500
>
>
>K> That's not good news. And TVs and monitors were getting so much
>K> simpler. Try hitting it (really hard if necessary) - that's what
>K> we do. Saves a lot of time.
>K> --=20
>K> Best regards,
>
>K> Bil Green
>K> 2001 TV VCR
>K> Mammoth Lakes, California
>K> 760-934-2001                          mailto:tv.vcrrepair@xxxxxxxxxxx
>
>
>K> Sunday, February 23, 2003, 11:29:25 PM, you wote:
>
>K>> Hi fellow techs,
>K> =20
>K>> I have very little experience with these newer, thin, panel computer
>K>> monitors.  This Envision EN-LM500 has a picture that blinks off and
>K> on
>K>> with the power light remaining unchanged.  When it does work the
>K> power
>K>> button sometimes won=92t turn the unit off and on.  I have checked =
>K> the
>K>> power supply and everything looks good.  The power supply only
>K> supplies
>K>> one voltage so I don=92t think the problem is there.  Are these
>worth
>K> the
>K>> effort to repair?  I have taken 1 apart before and it was a
>K> nightmare.
>K>> Much harder to repair than the normal picture tube monitor.  TIA
>K> =20
>K>> Kevin Wilks
>K>> Kevin's TV & Video Repair
>K>> Penticton BC Canada
>K>> kevintv@xxxxxxx
>K> =20
>
>K>>
>K>
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[TechAssist] Re: Envision 15" Panel computer monitor, EN-LM500

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