Re: Wanted: Solartron 7150 Plus service manual / disassembly instructions

In message <k1o6h1pg3gmgm2fgrs1k4bimoco0ag8cr6@xxxxxxx>
Geo <hy1k-hwia@xxxxxxxxxxxxxxx> wrote:

> > My Solartron 7150plus has just gone up in a puff of smoke - I was
> > watching
> >the meter, then I looked away for a few seconds and it started hissing and
> >grey smoke started pouring out the back (around the mains connector).
>
> Does it still work?

Yeah, but the mains filter is utterly cooked. Looks like a capacitor vented,
then ignited. I just spent an hour cleaning all the brown goo off the power
supply board with isopropyl and Qtips. Thankfully the metal can more-or-less
contained the damage - I just had to clean up the smoke residue.

Looks like I need to get a new mains inlet module though - the meter had a
Schaffner FN372-2/21 fitted and the only distributor I can find has the FN37x
series listed as discontinued (they only supply to businesses anyway).

I'm going to see if I can get in touch with someone at Schaffner UK who can
provide me with the details of someone that can supply me with a
replacement... I don't want 500 of them, I want one!

At least the meter still passes the powerup self-test... I'd still like a
service manual though, just in case something goes wrong later. Nice to see
that it hasn't needed any repair work though - all the chips have 1988
datecodes, which makes it about 17 years old. Heh.

Later.
--
Phil. | Acorn RiscPC600 SA220 64MB+6GB 100baseT
philpem@xxxxxxxxxxxxx | Athlon64 3200+ A8VDeluxe R2 512MB+100GB
http://www.philpem.me.uk/ | Panasonic CF-25 Mk.2 Toughbook
No software patents! <http://www.eff.org/> / <http://www.ffii.org/>
.

Relevant Pages

  • Re: Q about balanced feed line
    ... > while monitoring the FS meter I placed the core on the 115 to the house ... and that wire is, say, 3/4 wavelength long. ... choke in the wire 1/4 wavelength from one end. ... If the RF current path is down the feedline and then out into the mains, you can reduce it by inserting a choke at any point along its path, and the mains supply may be more convenient place. ...
    (rec.radio.amateur.antenna)
  • Re: Multimeter damaged when powered from regulated power suppy.
    ... >>> the voltage from the power line and the internal electronics of the DVM. ... >>> voltage with the AC mains. ... > for human safety that the battery remain inside the meter and impossible to ...
    (sci.electronics.basics)
  • Re: Oscilloscope grounding question...
    ... How can you find out if a conductor is safe to ground? ... For example, in a battery powered circuit since it is isolated from mains, I ... I've been using a cheap meter I don't care that much about that does ...
    (sci.electronics.design)
  • Re: Multimeter damaged when powered from regulated power suppy.
    ... >>> regulated powersuppy and an isolation transformer. ... >> voltage with the AC mains. ... > regulator, and measure the mains at the same time? ... for human safety that the battery remain inside the meter and impossible to ...
    (sci.electronics.basics)