[TechAssist] Re: CTC176K2 20" hotel set, weird!

From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Date: Fri, 10 Jan 2003 15:39:12 -0500
Kevin,
I have been on the road and not had the proper EEPROM with me and "tried"
others I did have. These have resulted in various scenarios such as worked
okay (but perhaps some features were different), dead set, worked but
display and foldover issues....etc.). So they ARE NOT the same. I might
suggest replacing the micro (part# 222934) and the EEPROM again (part#
221098).

Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager
Gemini Computer, TV, & Security Alarms
(508)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxxxxxxx
geminitv@xxxxxxx

----- Original Message -----
From: "Kevin" <kevintv@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, January 10, 2003 3:17 PM
Subject: [TechAssist] Re: CTC176K2 20" hotel set, weird!


>
> There is continuity between those 2 jumpers, so my problem must lie
> elsewhere.  I have a question for those RCA experts out there:  Are some
> eeproms so different that the "test eeprom" that I used would cause such
> weird symptoms?  I thought that all the different eeproms were for
> different features and menus for each model and size of RCA TV.  I do
> not think that a different eeprom would cause the front buttons to work
> so unusually.
>
> Kevin Wilks
> Kevin's TV & Video Repair
> Penticton BC Canada
> kevintv@xxxxxxx=20
> =20
>
> -----Original Message-----
> From: techassist-bounce@xxxxxxxxxxxxx
> [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Gemini Computer &
> TV
> Sent: Friday, January 10, 2003 3:37 AM
> To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] Re: CTC176K2 20" hotel set, weird!
>
>
> Surface mount chip jumper JC403 is at coordinates K/L 11 and JC411 is at
> coordinates J/K15/16. They are very small so look carefully.
>
> Bob Waterman, CET=AE #RI-28
> Master Technician License #9109
> Service Manager
> Gemini Computer, TV, & Security Alarms
> (508)695-7302
> (508)695-7769 FAX
> geminitv@xxxxxxxxxxxxxxxx
> geminitv@xxxxxxx
>
> ----- Original Message -----
> From: "Kevin" <kevintv@xxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Friday, January 10, 2003 2:24 AM
> Subject: [TechAssist] Re: CTC176K2 20" hotel set, weird!
>
>
> >
> > I can't find JC403 or JC411.  Can you give me some reference points?
> > Was your set dead as well?  TIA
> >
> > 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 Webster TV
> > Sent: Thursday, January 09, 2003 1:09 PM
> > To: techassist@xxxxxxxxxxxxx
> > Subject: [TechAssist] Re: CTC176K2 20" hotel set, weird!
> >
> >
> > Kevin,
> >
> > Check for open trace between JC403 & JC411, had this happen once in a
> > CTC176, and it caused numerous different symptoms, including the ones
> > you
> > mentioned. I found the tip in a EUROS book on RCA tips. I spent hours
> on
> > this set and was about to give up, when I came across the tip. Jumper
> > with a
> > piece of wire to solve.
> >
> >                                                     Dan Webster
> >                                                     Webster's TV
> >                                                     Shullsburg, Wi.
> > ----- Original Message -----
> > From: Kevin <kevintv@xxxxxxx>
> > To: TECH-ASSIST <techassist@xxxxxxxxxxxxx>
> > Sent: Wednesday, January 08, 2003 3:08 AM
> > Subject: [TechAssist] CTC176K2 20" hotel set, weird!
> >
> >
> > > RCA hotel set, CTC176K2 chassis.
> > >
> > > Hi fellow techs,
> > >
> > > Set came in dead.  Set tweaks as it is plugged in indicating the
> > > horizontal frequency is working.  Repaired tuner grounds, replaced
> > > shorted IR sensor-something sticky was poured on circuit board on
> > front
> > > of circuit board where the control buttons are, cleaned up.
> Replaced
> > > eeprom and microprocessor from working chassis.  Still dead.
> Replaced
> > > eeprom with test eeprom  that is from a different chassis.  Set
> comes
> > on
> > > as soon as set is plugged in but pwr, volume down and menu buttons
> do
> > > not work, channel up and down activate menu and change channels
> every
> > > 5th push, volume up button activates menu and sometimes OSD for
> > > parameter setup:  P00            V00.  Removed test eeprom while set
> > is
> > > running and reinstalled original eeprom and now set comes on by
> itself
> > > as with test eeprom.  By the way, voltage to eeprom at pins 5,6 and
> 8
> > is
> > > 5 volts.  HELP!!!!!!!!
> > >
> > > Kevin Wilks
> > > Kevin's TV & Video Repair
> > > Penticton BC Canada
> > > kevintv@xxxxxxx
> > >
> > >
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References:
- [TechAssist] Re: CTC176K2 20" hotel set, weird!
  - From: Kevin
[TechAssist] Re: CTC176K2 20" hotel set, weird!

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