[TechAssist] Re: RCA TV - F25652BL - CTC187AB - Won't Turn ON - FOLLOWUP
- From: "tvservice" <tvservice@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 29 Jul 2004 08:23:52 -0500
Some distributors sell them as "pre-programmed", alll that means is the
parameters are set for that particular chassis design. You will still need
to adjust vert size, width, color gray scale and tuner alignment.
Sometimes they are close enough you can get by without tuner allignment. You
will always have to set the horizontal frequency though.
Robert
tvservice@xxxxxxxxxxxxx
H & H Electronics Inc
----- Original Message -----
From: "David Lessard" <mr_fixit@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, July 28, 2004 1:36 PM
Subject: [TechAssist] Re: RCA TV - F25652BL - CTC187AB - Won't Turn ON -
FOLLOWUP
> I tried another EPROM from a CTC177AA2 chassis, it didn't work, but if I
> remember correctly that TV had a system control problem at the time,
> probably the EPROM....LOL.
>
> I'm sure I'll find one. If anyone has a known good EPROM to send my way,
> don't be shy. BTW are these things preprogrammed?
>
> David Lessard
> Alexandria, Ontario. Canada
> mr_fixit@xxxxxxxxxxxx
>
> -----Original Message-----
> From: techassist-bounce@xxxxxxxxxxxxx
> [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of tvservice
> Sent: Thursday, July 29, 2004 12:29 AM
> To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] Re: RCA TV - F25652BL - CTC187AB - Won't Turn ON -
> FOLLOWUP
>
> Sorry I'm in "Big D" Dallas Texas
> try any ctc177 or 187 eeprom for test it will work for test
> Robert
> tvservice@xxxxxxxxxxxxx
> H & H Electronics Inc
>
> ----- Original Message -----
> From: "David Lessard" <mr_fixit@xxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Wednesday, July 28, 2004 12:59 PM
> Subject: [TechAssist] Re: RCA TV - F25652BL - CTC187AB - Won't Turn ON -
> FOLLOWUP
>
>
> > I don't have Chipper Checker but I will get my hands on another good
> > EPROM. Do you know where I can get a pre-programmed EPROM? In Canada,
> > near Ontario would be nice.
> >
> > Thanks,
> >
> > David Lessard
> > Alexandria, Ontario. Canada
> > mr_fixit@xxxxxxxxxxxx
> >
> > -----Original Message-----
> > From: techassist-bounce@xxxxxxxxxxxxx
> > [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of tvservice
> > Sent: Wednesday, July 28, 2004 11:29 PM
> > To: techassist@xxxxxxxxxxxxx
> > Subject: [TechAssist] Re: RCA TV - F25652BL - CTC187AB - Won't Turn ON
> -
> > FOLLOWUP
> >
> > If the data never stops after AC plug in the EEPROM is defective.
> > The micro is asking for the data from eeprom until it answers it keeps
> > sending data
> > Change or reinitialize the eeprom with chipper check
> > Robert
> > tvservice@xxxxxxxxxxxxx
> > H & H Electronics Inc
> >
> > ----- Original Message -----
> > From: "David Lessard" <mr_fixit@xxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Wednesday, July 28, 2004 11:49 AM
> > Subject: [TechAssist] Re: RCA TV - F25652BL - CTC187AB - Won't Turn ON
> -
> > FOLLOWUP
> >
> >
> > > FOLLOWUP
> > >
> > > OK, just got back to this dog today.
> > >
> > > I have (5V) data activity on pins 5 and 6 of EPROM. Data is always
> > > active, it never stops after AC plug-in, and this may indicate a bad
> > > EPROM. Also I'm not too sure about U3101-5 (KD1 pin), schematic says
> > > voltage should be 0V; I'm reading 5V off the pin (disconnected from
> > the
> > > PCB). I can see how the panel button matrix works for CH UP, CH DN
> and
> > > MENU but I can't make sense of POWER, VOL UP and VOL DN. How does
> > > U3101-5 (KD1 pin) work for those buttons that don't seem to work?
> > > Perhaps I have two problems here.
> > >
> > > Looking for input on this as I've never done a system control
> problem
> > > before.
> > >
> > > Thanks techs,
> > >
> > > David Lessard
> > > Alexandria, Ontario. Canada
> > > mr_fixit@xxxxxxxxxxxx
> > >
> > > -----Original Message-----
> > > From: techassist-bounce@xxxxxxxxxxxxx
> > > [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of tvservice
> > > Sent: Wednesday, July 21, 2004 8:46 PM
> > > To: techassist@xxxxxxxxxxxxx
> > > Subject: [TechAssist] Re: RCA TV - F25652BL - CTC187AB - Won't Turn
> ON
> > >
> > > look for +5 volts on pins 5 and 6 of eeprom if not there or low,
> > replace
> > > it
> > > if ok at pin 8. If +5 ok all pins look for data momentarily on pin 5
> > > while
> > > applying ac power
> > > Robert
> > > tvservice@xxxxxxxxxxxxx
> > > H & H Electronics Inc
> > >
> > > ----- Original Message -----
> > > From: "David Lessard" <mr_fixit@xxxxxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Wednesday, July 21, 2004 8:52 AM
> > > Subject: [TechAssist] RCA TV - F25652BL - CTC187AB - Won't Turn ON
> > >
> > >
> > > > Hey Gang,
> > > >
> > > >
> > > > I need a troubleshooting chart for this TV, a schematic would also
> > be
> > > > appreciated, any tips out there? Fuse and HOT good, SMPS fires up
> > when
> > > > TV is plugged in. I use to have lots of information on the CTC187
> > > before
> > > > my other computer crashed. What did I learn, back things up on to
> > CD!
> > > >
> > > >
> > > >
> > > > Thanks,
> > > >
> > > >
> > > >
> > > > David Lessard
> > > >
> > > > Alexandria, Ontario. Canada
> > > >
> > > > mr_fixit@xxxxxxxxxxxx
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> >
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