Re: R2 Dead After 6-Month Storage [Batteries Removed]
"jmkowarko" <jmkowarko-/[email protected]> Fri, 20 Jan 2012 02:33:33 -0000
| Newsgroups | gmane.recreation.radio.hardware.icomr2 |
|---|---|
| Message-ID | <[email protected]> |
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hi guys.just to let you know that in FILES,left of the screen is a schemati=
c and a layout drawing..good luck riverengineer2000
mike
--- In [email protected], "mr fixit" <solomonpa@...> wrote:
>
> I've got a schematic and a layout drawing, unfortunately they are on pape=
r not electronic. I think you need to open it up and do some voltage measur=
ements to see how far the battery voltage is getting. You may have to make =
up some crocodile clip leads to enable you to connect the batteries to the =
battery connectors when you have it opened up on the bench. Be very careful=
to maintain the correct polarity!
>=20
> From the circuit I have it looks like the first place the supply goes is =
to C98 a 33u electrolytic capacitor so you would need to check you are gett=
ing 3v there. If not then you have found your problem. If you do then you w=
ould need to explore further. I notice that there is a dc to dc converter i=
c10 near c98 that presumably steps up the 3v a bit for other circuits. If i=
c10 is working c119 which is next to ic10 should have a higher voltage on i=
t than the battery supply.
>=20
> If its possibe to get to them, it is always worth replacing electrolytic =
capacitors as they are known to deteriorate more than any other component w=
ith age. Besides c98 I would check for voltage at c4 c61 c60 c15 and c18.
>=20
> Peter
>=20=20=20
>=20
> --- In [email protected], "riverengineer2000" <riverengineer@> wrote=
:
> >
> >=20
> >=20
> > --- In [email protected], MIKE KOWARKO <jmkowarko@> wrote:
> > >
> > > Hi riverengineer,wire
> > > I=A0have a R2 also,i assume you took the batteries out before storing=
the R2,if not check for signs of =A0corrosion in the battery compartment.I=
f so try to clean it,wire brush and contact cleaner.Clean the battery sprin=
gs and such and corrosion on the plastic battery housing/ Hope this works.I=
have a old AOR 1000 scanner,i also stored it away with out batteries in ii=
t plus A pro 84 ,and many more without a problem.Good Luck...Mike
> > >=20
> > > [Non-text portions of this message have been removed]
> > >
> >=20
> > Mike,
> >=20
> > I never leave batteries in anything that will be stored, so no there is=
no corrosion at all, just an apparently dead unit.=20=20
> >=20
> > Thank you for your suggestions,
> >=20
> > J.D.
> >
>
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<p>hi guys.just to let you know that in FILES,left of the screen is a=
schematic and a layout drawing..good luck riverengineer2000<br>
mike<br>
<br>
--- In <a href=3D"mailto:icomr2%40yahoogroups.com">[email protected]</=
a>, "mr fixit" <solomonpa@...> wrote:<br>
><br>
> I've got a schematic and a layout drawing, unfortunately they are on p=
aper not electronic. I think you need to open it up and do some voltage mea=
surements to see how far the battery voltage is getting. You may have to ma=
ke up some crocodile clip leads to enable you to connect the batteries to t=
he battery connectors when you have it opened up on the bench. Be very care=
ful to maintain the correct polarity!<br>
> <br>
> From the circuit I have it looks like the first place the supply goes =
is to C98 a 33u electrolytic capacitor so you would need to check you are g=
etting 3v there. If not then you have found your problem. If you do then yo=
u would need to explore further. I notice that there is a dc to dc converte=
r ic10 near c98 that presumably steps up the 3v a bit for other circuits. I=
f ic10 is working c119 which is next to ic10 should have a higher voltage o=
n it than the battery supply.<br>
> <br>
> If its possibe to get to them, it is always worth replacing electrolyt=
ic capacitors as they are known to deteriorate more than any other componen=
t with age. Besides c98 I would check for voltage at c4 c61 c60 c15 and c18=
.<br>
> <br>
> Peter<br>
> <br>
> <br>
> --- In <a href=3D"mailto:icomr2%40yahoogroups.com">icomr2@yahoogroups.=
com</a>, "riverengineer2000" <riverengineer@> wrote:<br>
> ><br>
> > <br>
> > <br>
> > --- In <a href=3D"mailto:icomr2%40yahoogroups.com">icomr2@yahoogr=
oups.com</a>, MIKE KOWARKO <jmkowarko@> wrote:<br>
> > ><br>
> > > Hi riverengineer,wire<br>
> > > I=A0have a R2 also,i assume you took the batteries out befor=
e storing the R2,if not check for signs of =A0corrosion in the battery comp=
artment.If so try to clean it,wire brush and contact cleaner.Clean the batt=
ery springs and such and corrosion on the plastic battery housing/ Hope thi=
s works.I have a old AOR 1000 scanner,i also stored it away with out batter=
ies in iit plus A pro 84 ,and many more without a problem.Good Luck...Mike<=
br>
> > > <br>
> > > [Non-text portions of this message have been removed]<br>
> > ><br>
> > <br>
> > Mike,<br>
> > <br>
> > I never leave batteries in anything that will be stored, so no th=
ere is no corrosion at all, just an apparently dead unit. <br>
> > <br>
> > Thank you for your suggestions,<br>
> > <br>
> > J.D.<br>
> ><br>
><br>
<br>
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