[TechAssist] Re: Mitsubishi Projection TV Model VS-50VA2\ VZ1 chasis
- From: armando guerra <birdie@xxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Tue, 24 Jun 2003 11:32:46 -0700
No raster at all.Bringing up the screen controls does not show any light.The
high
volatge at the flyback is at 10KV.I can hear a small chirping sound coming from
a
small transformer T9A0. Sure sounds like its in a shutdn mode. I disconnected
the
yokes one at a time to see if they were loading something dn but made no
difference.Like I mentioned before,the vcc at the vertical ic is very
low,10.2v.Is there anyway thatI can defeat the ckt protect for the vertical to
make sure that its not causing the problem.?Thanks
Mando
Birdie's TV & Electronics
Casa Grande, AZ
Gemini Computer & TV wrote:
> Do you have OSD? You said no pix, is this just video or the entire raster?
>
> Bob Waterman, CET® #RI-28
> Master Technician License #9109
> Service Manager / Parts Manager
> Gemini Computer, TV, & Security Alarms
> (508)695-7302
> (508)695-7769 FAX
> geminitv@xxxxxxxxxxxxxxxx
> geminitv@xxxxxxx
> www.geminicomputertvsecurityalarms.com
>
> ----- Original Message -----
> From: "armando guerra" <birdie@xxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Tuesday, June 24, 2003 12:02 PM
> Subject: [TechAssist] Mitsubishi Projection TV Model VS-50VA2\ VZ1 chasis
>
> > This set has good sound but no pix at all.I checked all caps in the PS
> > and also in the vertical ckt.All ok. I checked for the 28V at pin 8 of
> > this ic and its only at 10.2v.The vcc
> > at pin 1 is at 1.9v. I went ahead anfd replaced the IC anyway since its
> > known to cause a shutdn problem.Eighter I am missing the vcc supply to
> > the IC or its in shutdn mode due to
> > a problem in the vertical ckt.Can someone give me the resistor id off
> > the flyback and diode that feeds the vertical ic so that I can check
> > them for open or shorts.Also, any idea's or tips would be apreciated
> > very much.Thanks
> > Mando
> > Birdie's TV & Electronics
> > Casa Grande, AZ
> >
> >
> ****************************************************************************
> *
> > CHECK OUT THE NEW CHATROOM! Just login and click on chat!
> > http://www.tech-assist.org/secure/tip/main.htm
> > The Tech Address Book:
> > http://www.tech-assist.org/secure/tip/contact.htm
> > Add a Repair Tip Here, or Change/Remove your Email Address:
> > http://www.tech-assist.org/secure/tip/main.htm
> > Lost Password:
> > http://www.tech-assist.org and select "Lost your Login Info?".
> > Email Archives:
> > //www.freelists.org/archives/techassist/
> >
>
> *****************************************************************************
> CHECK OUT THE NEW CHATROOM! Just login and click on chat!
> http://www.tech-assist.org/secure/tip/main.htm
> The Tech Address Book:
> http://www.tech-assist.org/secure/tip/contact.htm
> Add a Repair Tip Here, or Change/Remove your Email Address:
> http://www.tech-assist.org/secure/tip/main.htm
> Lost Password:
> http://www.tech-assist.org and select "Lost your Login Info?".
> Email Archives:
> //www.freelists.org/archives/techassist/
*****************************************************************************
CHECK OUT THE NEW CHATROOM! Just login and click on chat!
http://www.tech-assist.org/secure/tip/main.htm
The Tech Address Book:
http://www.tech-assist.org/secure/tip/contact.htm
Add a Repair Tip Here, or Change/Remove your Email Address:
http://www.tech-assist.org/secure/tip/main.htm
Lost Password:
http://www.tech-assist.org and select "Lost your Login Info?".
Email Archives:
//www.freelists.org/archives/techassist/
Other related posts:
