[TechAssist] Re: Viewsonic M70B /Horz foldover
- From: "Tri-County Tv" <tricountytv@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 4 Sep 2003 15:11:25 -0400
Steve,
I think you are right about the diode, yes it does seem prevalent
at higher scan rates, the H.O.T is original. If you could help me find that
diode, I would greatly appreciate it.
Tom Berger
Tri-County TV
Robbinsville
North Carolina 28771
828-479-6043
Fax-828-479-4868
(tricountytv@xxxxxxxxxxxxx)
----- Original Message -----
From: "Technotronic Dimensions" <Steve@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, September 04, 2003 12:38 PM
Subject: [TechAssist] Re: Viewsonic M70B /Horz foldover
> That Diode is the Damper Diode which helps prevent Feedback through the
HOT
> when its Conducting. It could be the whole problem. Is the problem more
> prevelent at the Higher Scan rates? If so, I would say yes then you need a
> new Diode. If so, I may be able to provide a Sub.
>
> PS: Also its a good idea to Verify that the HOT in there is the Factory
> designated HOT. Sometimes people replace the HOT with a NON internal
Damper
> type when it calls for one with. 2SC5387 Appears to have no internal
Damper.
>
>
> Steve Hearns
> Technotronic Dimensions, NY (USA)
> 1-877-817-9885 (Voice / Fax US Only)
> WWW.TECHNOTRONIC-DIMENSIONS.COM
>
>
> ----- Original Message -----
> From: "Tri-County Tv" <tricountytv@xxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Thursday, September 04, 2003 12:25 PM
> Subject: [TechAssist] Viewsonic M70B /Horz foldover
>
>
> > Greeting,
> > This viewsonic monitor (model VCDTS21503-2M /manufactured
> dec 1999)came in with horz foldover after it runs for about 5-10 min, it
> starts out as a thin line in the middle of the picture (going top to
bottom)
> the picture begins to fold at that line, I tried freeze spray on the H.O.T
> (Q503-2SC5387)and the picture would clear up,but I also sprayed the H.V
> diode(D508- FMQG1FS) near the H.O.T and the picture cleared up. The H.O.T
is
> a 2SC5387 and not very expensive but the H.V. diode is expensive and hard
to
> find, was wondering if anybody has seen this problem before? thanks
> >
> > Tom Berger
> > Tri-County TV
> > Robbinsville
> > North Carolina 28771
> > 828-479-6043
> > Fax-828-479-4868
> > (tricountytv@xxxxxxxxxxxxx)
> >
>
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