[TechAssist] Re: Mastech capacitor checker model 390-735
- From: Gary McCartney <gary@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Fri, 12 Dec 2003 09:34:07 -0500
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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