Article View: sci.electronics
Article #3617Re: Help needed troubleshooting B/W TV
From: Forrest Cook
Date: Mon, 06 Nov 1989 05:26
Date: Mon, 06 Nov 1989 05:26
19 lines
1383 bytes
1383 bytes
In article <107@cupcake.sal.wisc.edu> jwp@larry.sal.wisc.edu (Jeffrey W Percival) writes:
>I have a 22-year old Panasonic TR-205 B/W TV (transistors, no tubes).
...
>Now I have more subtle problems: mainly, a very
>grainy picture. Very white-noisy. Otherwise, stable (no roll, etc.).
That sounds like the first RF amp stage in the tuner is dead.
I would suggest removing the tuner and replacing the transistor that
is nearest to the antenna terminals. Be prepared for some micro
surgery, The parts are usually crammed in pretty tight.
One word of caution: be careful not to bend the coils or you
will detune the tuner.
Good Luck
^ ^ Forrest Cook - Beware of programmers who carry screwdrivers - LB
/|\ /|\ cook@stout.ucar.edu (The preceeding was all my OPINION)
/|\ /|\ {husc6|rutgers|ames|gatech}!ncar!stout!cook
/|\ /|\ {uunet|ucbvax|allegra|cbosgd}!nbires!ncar!stout!cook
Technical Details
Message-ID:
<5014@ncar.ucar.edu>Path:
arc1-ca.pugleaf.net!utzoo!attcan!uunet!cs.utexas.edu!mailrus!ncar!stout!cookReferences:
<107@cupcake.sal.wisc.edu>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!cs.utexas.edu!mailrus!ncar!stout!cook From: cook@stout.ucar.edu (Forrest Cook) Newsgroups: sci.electronics Subject: Re: Help needed troubleshooting B/W TV Keywords: B/W TV troubleshooting panasonic Message-ID: <5014@ncar.ucar.edu> Date: 6 Nov 89 05:26:14 GMT References: <107@cupcake.sal.wisc.edu> Sender: news@ncar.ucar.edu Reply-To: cook@stout.UCAR.EDU (Forrest Cook) Organization: Field Observing Facility, NCAR, Boulder, CO Lines: 19