[TechAssist] Re: Compaq monitor MV500 Model 315U

I just did a value check on cap with cap meter.  I can find no other numbers
yet on FLY but the FCC ID is BJMC5DU
Phillip R Hull     STET
phil245@xxxxxxxxxxxxx
FAX 517--569-3075
Professional Technicians only
----- Original Message ----- 
From: "Technotronic Dimensions" <Steve@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, September 04, 2003 2:06 PM
Subject: [TechAssist] Re: Compaq monitor MV500 Model 315U


> Got an FCC ID ? Had a Chungwah once with Open Filaments but it powered,
just
> gave a blank Screen.
>
> Ths Cap check is sort of a general Check, because really there is 1500VDC
in
> actual Operation of the Unit applied to it. I dont think you checked it
with
> 1500V on it right? I use a Sencore and apply 600V there which is the Max
it
> can go to. Dunno what you used, but I would say if there was a small
amount
> of Test Voltage it 'could' still read a different capacitance if more is
> applied. There could also be an open or a Short in a winding, but you
would
> need to do a LOPT Ring Test.
>
> Still would be good if you had other FBT numbers to post. This Way I could
> check history of Failures.
>
> Steve Hearns
> Technotronic Dimensions, NY (USA)
> 1-877-817-9885 (Voice / Fax US Only)
> WWW.TECHNOTRONIC-DIMENSIONS.COM
>
>
> ----- Original Message ----- 
> From: "Phillip R. Hull" <phil245@xxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Thursday, September 04, 2003 1:42 PM
> Subject: [TechAssist] Re: Compaq monitor MV500 Model 315U
>
>
> > I get 3.1 nF  so it looks like its not the fly.   This unit has a
chunghwa
> > picture tube if that means anything
> > Phillip R Hull     STET
> > phil245@xxxxxxxxxxxxx
> > FAX 517--569-3075
> > Professional Technicians only
> > ----- Original Message ----- 
> > From: "Technotronic Dimensions" <Steve@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Thursday, September 04, 2003 11:11 AM
> > Subject: [TechAssist] Re: Compaq monitor MV500 Model 315U
> >
> >
> > > Hi Phil:
> > >
> > >             Sounds to me like the FBT is breaking down under load.
Post
> > the
> > > Numbers on the White Sticker on the FBT here, and It may be a known
Part
> > > that fails alot. You can also Pull the Anode cap, and from there to
the
> > > ground pins on the FBT, you ought to measure from 2-9 nF. Thats the
> > Internal
> > > Cap in the FBT, and if its Open or too high in value, it will cause
> > shutdown
> > > like you are seeing.
> > >
> > > Steve Hearns
> > > Technotronic Dimensions, NY (USA)
> > > 1-877-817-9885 (Voice / Fax US Only)
> > > WWW.TECHNOTRONIC-DIMENSIONS.COM
> > >
> > > ----- Original Message ----- 
> > > From: "Phillip R. Hull" <phil245@xxxxxxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Thursday, September 04, 2003 11:02 AM
> > > Subject: [TechAssist] Compaq monitor MV500 Model 315U
> > >
> > >
> > > > I usually do not work on these but I have this one that won't stay
on.
> > > > When you push the power button the lite turns green and Hi volts
comes
> > up
> > > > for about 4-5 seconds and high volts shuts off and light turns to
> amber
> > > > color.  I checked the best I could without a manual and I have
scoped
> > the
> > > > vertical and its OK.  I have 15v ,12v, 75v ,-9 and 8volts and
filiment
> > are
> > > > lit.   I checked all the tips I could find but found nothing on this
> > > model#
> > > > 315U
> > > > Any help sure appreciated,
> > > > Thanks
> > > > Phillip R Hull     STET
> > > > phil245@xxxxxxxxxxxxx
> > > > FAX 517--569-3075
> > > > Professional Technicians only
> > > >
> > > >
> > >
> >
>
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