[TechAssist] Re: 32" RCA CTC187 - Dead Set?
- From: Kevin <kevintv@xxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 23 Oct 2004 15:19:53 -0700
Pin 8 is your VCC and should be 5 volts, close enough. Pins 5 and 6
should also be 5 volts. Disconnect pins 5 and 6 and see if the voltages
go up. Measure on the eeprom and the traces feeding the eeprom. It
sounds like your eeprom is bad.
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 Dan Garris
Sent: Saturday, October 23, 2004 3:08 PM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Re: 32" RCA CTC187 - Dead Set?
CTC187CL3 #U3201 EEprom Voltages are:
Pins 1-4 = 0 volts
Pin 5 = 1.3 volts
Pin 6 = 1.22 volts
Pin 7 = 0 volts
Pin 8 = 4.88 volts
Dan Garris
Garris Radio & TV
New Bern, NC
>From: Kevin <kevintv@xxxxxxx>
>Reply-To: techassist@xxxxxxxxxxxxx
>To: techassist@xxxxxxxxxxxxx
>Subject: [TechAssist] Re: 32" RCA CTC187 - Dead Set?
>Date: Sat, 23 Oct 2004 14:19:57 -0700
>
>What are the voltages on the eeprom?
>
>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 Dan Garris
>Sent: Saturday, October 23, 2004 1:31 PM
>To: techassist@xxxxxxxxxxxxx
>Subject: [TechAssist] 32" RCA CTC187 - Dead Set?
>
>What: 32" RCA TV
>Model: F32672SB
>Chassis: CTC187CL3
>Sams#: 3672
>
>Dead Set, No blown fuse, No Relay CLick, HOT Shorted.
>
>Replaced w/ Original Q4401 BUH517 HOT, Replaced U4101 STK730-150
>Regulator
>IC, Performed TOB repairs and even changed the 223957 eeprom, (using
>original eeprom set still dead) Checked several of the common failure
>diodes
>ok, Resoldered L14101 coil and horiz. driver transformer. The standby
>p/s
>voltages are all there and ok (These are test points 1-5 on the Sams).
I
>
>supplied +12v to the emitter of Q4852 (12v Reg) to get the set to fire
>up
>and it did, ...I turned up the screen control on the flyback and I have
>a
>blank screen with retrace lines, no picture, no OSD, can't even access
>setup
>menu. At least I know the FBT & HV circuits are workable! I am getting
a
>
>mental block on this one and looking for some help. Do I have a bad
>T-Chip
>or has anyone seen this description while troubleshooting a CTC187?
>
>Dan Garris
>Garris Radio & TV
>New Bern, NC
>dgarris@xxxxxxxxxxx
>Ph: (252) 638-4477
>
>
>
>-----------------------------------------------------------------------
-
>-----
>Lost Password:
>http://www.tech-assist.org and select "Login Problems?".
>Email Archives:
>//www.freelists.org/archives/techassist/
>
>
>-----------------------------------------------------------------------
------
>Lost Password:
>http://www.tech-assist.org and select "Login Problems?".
>Email Archives:
>//www.freelists.org/archives/techassist/
------------------------------------------------------------------------
-----
Lost Password:
http://www.tech-assist.org and select "Login Problems?".
Email Archives:
//www.freelists.org/archives/techassist/
-----------------------------------------------------------------------------
Lost Password:
http://www.tech-assist.org and select "Login Problems?".
Email Archives:
//www.freelists.org/archives/techassist/
Other related posts:
