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PN50C7000YFXZA Fast Track Troubleshooting Manual - Rev 1/12/12
NO SERVICE BULLETINS
Y Buffer X Buffer

SMPS
Y Main
X Main
Please check GSPN for parts update!
Quick Parts List
Main Version Parts No Short Description
N002 BN44-00333A SMPS
Logic N002 BN94-03313Q Main PCB
N002 BN96-12958A Buffer E
N002 BN96-12959A Buffer F
Woofer N002 BN96-12960A X Main
N002 BN96-12961A Buffer X
Buffer E Buffer F N002 BN96-12962A Y Main
Spkr L N002 BN96-12963A Buffer Y
Spkr R N002 BN96-12964A Logic Main PCB
N002 BN96-14504A Function & IR PCB
Please check for latest update! N002 BN96-14139A Panel
Latest Firmware:
HELP :
N002 BN63-06481A Bottom Cover
1-888-751-4086 (Tech Support)
2010 PDP Firmware for Valencia 1G (T-VALAUSC, N002 BN96-12936A Stand Base
GSPN 1-866-894-0637 (FE) 1035.0) N002 BN96-12939A Stand Guide
http://gspn3.samsungcsportal.com Firmware for Valencia 1G Model N002 BN96-12995B Front Cover
-. Version : 1035.0. Name: T-VALAUSC N002 BN96-13008B Rear Cover
-. Related Models: PDP: C6400, C6500, C7000, N002 BN96-13019A Stand Guide
C8000 N002 BN40-00162A Tuner
PLUS ONE
-. Desc: Support Netflix 2.1 and MLB.tv apps. and N002 BN96-12723U LVDS Cable
http://my.plus1solutions.net/clientPortals/samsung this firmware prevents below issues: N002 BN96-12941K Speaker
- 3D picture judders when 'Motion Judder N002 BN96-13273A Speaker
HOT TIPS Canceller' is set to 'Smooth' or 'Standard'. N002 BN59-01043A Remote
-'USB Power Overload' message pops up even N002 BN63-01798B Cleaning Cloth
-Power On Problems: (pg. 3) USB port is not connected N002 BN96-09872R Power Cord
-Video Problems: (pg. 4) - HDMI ports recognition error and signal loose
- Plug & Play is displayed whenever turning on
N002 BN96-10788A Accessory Pack

TV. 1
PN50C7000YFXZA Fast Track Troubleshooting Manual

CN4006

Power On Sequence: 5000

1. STBY 5V (CN801, #2, 5v)
2. PS_ON (CN801, #1, 3.3v-0v)
3. VS_ ON (CN802, #6, 0-3.3v)
4. Panel should illuminate briefly
PN50C7000YFXZA Fast Track Troubleshooting Manual

SAMPLE VIEW & READINGS

"VITAL SIGNS"
When troubleshooting, It's very important to first check Vs, Va, Vsc & Ve
Power Supply Trouble Shooting Notes: If Vs is missing (0V), disconnect power and check for short. Use ohm meter to
2010/2011 models measure resistance while disconnecting Y-Board & X-Board supply feeds one
at a time.
Will not be run with the "X" or "Y" main disconnected. The SMPS will shut Turn Power On and Test SMPS with shorted connector removed for correct Vs
down immediately. However if a meter is first connected to the test point voltage verification. (It may only come up briefly but to full level). Be careful
when power is applied it will read the correct voltage briefly before shut- not to reconnect power connectors until Vs falls below 10V.
ting down.(You have enough time to check key voltages)
If Va is low or missing, disconnect power connectors to Address Boards and
CAUTION: Do not reconnect any connectors to SMPS or Y/X Boards until Check to see if SMPS Supply is restored. (Note Va feed normally passes
power has been turned off long enough for Vs to drop below 10V or damage through the Y-Drive to the Address Boards (Logic Buffer Boards).
will occur to X or Y Boards.
If Vsc is low or missing and Vs is OK, the failure is with the Y-Board
SMPS Over Current Protection .
since the Y-Board generate the Vsc voltage from the supplied Vs.

If a short circuit occurs on either the VS or VA voltage lines, the SMPS stops If Ve is low or missing and Vs is OK, the failure is with the X-Board since the
operating, but should not fail. When the short circuit is removed from the Ve is generated by the X-Board from the supplied Vs. (Please note: In some
source line, the Power Supply will operate normally again. Many SMPS rare cases the Ve is generated by the Y-Board fed to the X-Board.)
Supplies are replaced needlessly!
Other SMPS Voltages:
Check Low Voltage feeds to the Main Board and other supplied Assemblies.
3
PN50C7000YFXZA Fast Track Troubleshooting Manual
TROUBLESHOOTING VIDEO PROBLEMS
1. Verify Video Operation 2. Using Test Patterns in Service Mode
a) Customer Picture Test (if available) - ENTERING SERVICE MODE