Do you have a dead Toshiba PCX2200?

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It appears that my occasional problems with my PCX2200 involve the
RF connector.  I've tried changing the cable, but that made no
difference.

When the modem starts to act up (massive packet loss when pinging my
default gateway), I've discovered that I can reach over and
generally mess with that connector, and it will start working ok
again.  Sometimes, I can "fix" it by unscrewing the connection
several turns and just leaving it that way.

If I set up Ping to do 50 or so in succession, I can see it stop
losing packets as I unscrew the cable.  At other times, I can fix it
by screwing the cable back in, at least part of the way.  But none
of these fixes last very long.

Well I've taken the modem apart (those tamper-proof torx screws were
a bitch), and it seems the connector in question is inside a
completely-enclosed tuner assembly.  The tuner appears to have a
snap-on top, but it doesn't want to move, and there appear to be
things inside the tuner which are soldered into holes in that top.

Has anyone here ever removed the top from that tuner?  Did that turn
out to be a destructive disassembly?  Does anyone have a dead 2200
he could take apart and tell me how I can get to that connector?



Re: Do you have a dead Toshiba PCX2200?


On Wed, 01 Mar 2006 17:58:55 -0600, Peabody

Quoted text here. Click to load it

I don't have that model, but two things come to mind.
1. Have you ever heard the phrase, "No user serviceable parts inside"?
2. Did you happen to mention who owns it?

Good luck with it. :-)


Re: Do you have a dead Toshiba PCX2200?


Bill M. says...

 > I don't have that model, but two things come to mind.
 > 1. Have you ever heard the phrase, "No user serviceable
 > parts inside"?
 > 2. Did you happen to mention who owns it?

1. Yes.  I've always ignored it.

2. You mean the modem?  I do.   Free and clear.  I paid cash
for it.

 > Good luck with it. :-)

Thanks.



Re: Do you have a dead Toshiba PCX2200? - never mind


I found someone who had taken the 2200 tuner cover off,
non-destructively.  So that question is answered.


Re: Do you have a dead Toshiba PCX2200? - never mind


Quoted text here. Click to load it

Typically the F-connector is part of the tuner's shield.  Messing with it
will most likely reduce the effectiveness of the shield, which will allow
ingress from TV transmitters and local interferers, which will result in
reduced performance.

Also, most "can" tuners have coils inside that are hand tuned.  Accidentally
touching or moving a coil can "de-tune" the tuner's circuits, again
resulting in reduced performance.  Just brushing a coil with your finger can
move it enough to mess up the tuner.  You won't be able to see any
difference, but the tuner won't work as well, if at all.

Bottom line, you may be able to "fix" the mechanical problem with the
connector while creating more subtle tuner performance problems.  If you
find your modem doesn't work as well after your "fix," I suggest you toss it
and get a new one.  If you want to ensure a quality repair, messing around
inside a tuner can is something that is best left to an experienced
electronics technician.

-Gary



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