[TechAssist] Re: Mastech capacitor checker model 390-735
- From: gulftech@xxxxxxxx
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 13 Dec 2003 18:09:44 -0600
Gary,
I agree. My Dick Smith ESR meter is one of my useful pieces of equipment
in the shop, but you still must have a good capacitor measurement
instrument, especially for those darned safety caps in the horizontal
deflection ckts. I couldn't get by without both meters.
Ken Smith
Gulf Technical Services
3034 Gulf Breeze Parkway
Gulf Breeze, FL 32563
850-934-8324 (Voice) 850-932-0819 (Fax)
On Sat, 13 Dec 2003 09:26:59 -0500 Gary McCartney <gary@xxxxxxxxxxx>
writes:
> I've had a Capacitor Wizard ESR meter for about 3 years and love it-
> use
> it all the time. I bought the capacitor value meter because I want
> to be
> able to know the value of caps and to match up ones, example for the
> Sony TV power supplies where the 0.05 uF 50V jobs all need
> replacing. It
> is good to match up the new ones. I bought a whole bunch of them and
> will match them as I need em. I have no intention of going without my
> new meter. Might have to get an exchange or something but I'm going
> to
> have one.
>
>
>
>
> Gary McCartney
>
> McCartney Electronics
> Guelph Ontario Canada
> Est. 1984
> email: gary (at) number63.ca
>
>
>
>
>
>
> Kevin wrote:
> >
> > Just a suggestion: If you don't already own an ESR meter I would
> return
> > that cap checker to Parts Express, get my money back and buy an ESR
> > meter. 99% of the time that a cap is low in value, the ESR is bad
> as
> > well. The ESR meter will also show that caps that have good
> values,
> > have ESR values that are too high (about 25% of the time). HTH
> >
> > Kevin Wilks
> > Kevin's TV & Video Repair
> > Penticton BC Canada
> > kevintv@xxxxxxx
> >
> >
> > -----Original Message-----
> > From: techassist-bounce@xxxxxxxxxxxxx
> > [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Gary
> McCartney
> > Sent: Friday, December 12, 2003 6:34 AM
> > To: techassist@xxxxxxxxxxxxx
> > Subject: [TechAssist] Re: Mastech capacitor checker model 390-735
> >
> > Kevin, this meter is a capacitance value checker, not ESR. I played
> > around a bit more with the meter and I was able to get a
> capacitance
> > reading by inserting the cap into the built in socket. Even then by
> > wiggling the meter, the reading would change. I have not been able
> to
> > get a reading when cap is connected to the external leads
> (continuity of
> > the leads check ok). I also have not been able to get the case
> apart
> > yet.
> >
> > Gary McCartney
> >
> > McCartney Electronics
> > Guelph Ontario Canada
> > Est. 1984
> > email: gary (at) number63.ca
> >
> > Kevin wrote:
> > >
> > > Just curious, does this meter measure ESR?
> > >
> > > Kevin Wilks
> > > Kevin's TV & Video Repair
> > > Penticton BC Canada
> > > kevintv@xxxxxxx
> > >
> > >
> > > -----Original Message-----
> > > From: techassist-bounce@xxxxxxxxxxxxx
> > > [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Gary
> McCartney
> > > Sent: Thursday, December 11, 2003 10:37 AM
> > > To: techassist@xxxxxxxxxxxxx
> > > Subject: [TechAssist] Mastech capacitor checker model 390-735
> > >
> > > I just received this brand new Mastech capacitor checker model
> 390-735
> > > from Parts Express and the thing doesn't work. The display comes
> on ok
> > > but it doesn't measure any capacitors, it just stays at 000. The
> leads
> > > check ok. I removed the 2 screws from the rear bottom of the
> unit to
> > > remove the back cover but I can't get the cover off. It is stuck
> at
> > the
> > > top somehow and I'm afraid of busting the plastic if I force it
> too
> > > much. I'm thinking the top is likely held by catches, so if
> anyone
> > else
> > > has one of these meters and can advise me how to remove the back
> > cover,
> > > maybe I'll find a bad connection or some simple reason why this
> thing
> > is
> > > measuring. I hate to ship it back across the border and all. It
> will
> > > cost me almost as much as a new meter in shipping charges to get
> it
> > > back.
> > >
> > > Parts express up to date catalog, page 69.
> > >
> > > Thanks for any help.
> > > --
> > >
> > > Gary McCartney
> > >
> > > McCartney Electronics
> > > Guelph Ontario Canada
> > > Est. 1984
> > > email: gary (at) number63.ca
> > >
> > >
> >
>
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