[TechAssist] Re: RCA TV - F25652BL - CTC187AB - Won't Turn ON - FOLLOWUP
- From: "David Lessard" <mr_fixit@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 28 Jul 2004 18:59:14 +0100
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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