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Main => Monitor/Video Forum => Topic started by: kardenm on September 17, 2014, 09:16:45 am

Title: WG 1901?, HV Shutdown
Post by: kardenm on September 17, 2014, 09:16:45 am: Working on a monitor I think is a WG. Printed on board is MTG-2901 MA REV-01 and WG 1901.

When I turn power on I hear HV come on but It immediately fades out or shuts down. Result is no picture and no HV.

I did replace the HOT but result is the same.

Where else should I start to look for this problem? Help and advice greatly appreciated!
Title: Re: WG 1901?, HV Shutdown
Post by: kardenm on September 20, 2014, 09:44:43 am: Anyone??
Title: Re: WG 1901?, HV Shutdown
Post by: grantspain on September 20, 2014, 11:22:15 am: the mtg-2901 is a tovis monitor,probably rebranded as vision pro
never heard of a wg 1901

do you have a photo of the chassis?
Title: Re: WG 1901?, HV Shutdown
Post by: kardenm on September 21, 2014, 03:14:10 pm: No but I'll get one tomorrow. Thanks.
Title: Re: WG 1901?, HV Shutdown
Post by: kardenm on September 23, 2014, 09:09:38 am: Here are photos of the chassis.
Title: Re: WG 1901?, HV Shutdown
Post by: ed12 on September 23, 2014, 10:55:32 am: ok theres the first problem
that is not a "true" wg but rather a branded wg
i think that was made by wei
ken layton would know better

ed
Title: Re: WG 1901?, HV Shutdown
Post by: kardenm on September 23, 2014, 08:35:10 pm: Is it possible to say which components might be causing this problem?
If I could narrow it down, I could start testing or replacing stuff.
Title: Re: WG 1901?, HV Shutdown
Post by: ed12 on September 23, 2014, 08:44:08 pm: ya it is a smps style chassic
so after the switch transformer chk your dc volt's
with ref. to that ground and not your hot ground
let's start there

ed
Title: Re: WG 1901?, HV Shutdown
Post by: Ken Layton on September 23, 2014, 11:20:43 pm: Tovis MTG-1901 which is a.k.a. Happ Controls "Vision Pro" MTG-1901.

Service Manual:

http://arcarc.xmission.com/PDF_Monitors/Vision_Pro_%28MTG-XX01_Series_13in_and_19in_CGA%29.pdf (http://arcarc.xmission.com/PDF_Monitors/Vision_Pro_%28MTG-XX01_Series_13in_and_19in_CGA%29.pdf)

Manufacturer's website:

http://www.tovism.com/english/?page_id=35 (http://www.tovism.com/english/?page_id=35)
Title: Re: WG 1901?, HV Shutdown
Post by: ed12 on September 23, 2014, 11:48:10 pm: thk-u ken

ed
Title: Re: WG 1901?, HV Shutdown
Post by: kardenm on September 30, 2014, 02:30:42 pm: Yes! Thank you so much Ken and ed. I had no info on this chassis. I'll look at this Some more and post what I find.