[TechAssist] Re: Envision Flat Panel Monitor
- From: Scott Beebe <Scott@xxxxxxxxxxxxxxxxxxxxx>
- To: peggs <techassist@xxxxxxxxxxxxx>
- Date: Thu, 6 May 2004 10:30:49 -0400
Hello peggs,
The first one we seen, had a power supply module, which fed only +12 and +5 to
the main signal board and HV board to drive the backlight. The power supply was
pulsing, like it was trying to come up. (The +12 line) If we hooked a regulated
power supply to the +5 and +12 lines, the monitor would come up. I decided to
put a bulb on the 12v line for load while troubleshooting it.... and it stayed
lit. The supply seemed to need more load to regulate. No docs, and all
componets I checked seemed good. Final solution: added couple resistors to
"pre-load" the supply, as it did not need much. The resistors never get hot,
and unit was tested several days.... Sent it home and have not come back. Was
very weird fix, If you can call it that. It made me nurvious, but seemed to
work. I can't remember what it was, just an "off brand" monitor.
Thanx,
Scott Beebe
Ohm Electronics Inc.
609 W. Clinton St.
Ithaca NY 14850
Voice: (607) 273-8406
Fax: (607) 273-8743
WWW.OhmElectronicsInc.com
mailto:Scott@xxxxxxxxxxxxxxxxxxxxx
Wednesday, May 5, 2004, 7:14:44 PM, you wrote:
peggs> My first flat panel to work on.
peggs> model EN-7100s
peggs> FCC ID: ARSLM782T
peggs> This thing has 5 warranty stickers inside here.#6 is on the Back.
peggs> I guess they were expecting in-warranty troubles.
peggs> Anyway,when it was dropped off,we hooked it up and it was
peggs> stuck in stand-by(yellow power light) and couldn't turn it off.
peggs> Now,with the back removed Power light comes on and off properly,but still
peggs> it's stuck in the stand-by mode,with a slight Flash by the Screen
periodically.
peggs> I don't know what the Voltages should be on the Lamp or on the PCB that
peggs> drives it.
peggs> Would this Lamp cause it to stay in stand-by ???
peggs> Peggs
peggs> Peggs' Electronics
peggs> 1519 West 2nd Street
peggs> Owensboro,KY 42301
peggs> 270-926-4968
peggs> fax 270-686-7399
peggs> peggs@xxxxxxxxxxxxx
peggs>
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