[TechAssist] Re; RCA TV - F25652BL - CTC187AB - Won't Turn ON - FOLLOWUP
- From: mebonnell@xxxxxxxxx (Old TV Man)
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 28 Jul 2004 18:50:33 -0500
David I will send you a 223940 (pre-programmed). $4.00 should cover it.
I hope I can find your address again.
Max Bonnell
Bonnell TV
Robinson, IL
Sender: techassist-bounce@xxxxxxxxxxxxx From:
mr_fixit@xxxxxxxxxxxx(David=A0Lessard) Date: Wed, Jul 28, 2004, 7:36pm
(CDT+6) To: techassist@xxxxxxxxxxxxx Subject: [TechAssist] Re: RCA TV -
F25652BL - CTC187AB - Won't Turn ON - FOLLOWUP Reply=A0to:
techassist@xxxxxxxxxxxxx
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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