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Samsung CL29M40MQ horizontal line    
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Chester



Joined: 22 Mar 2010
Posts: 2

PostPosted: Sat Mar 01, 2014 7:03 am    Post subject: Samsung CL29M40MQ horizontal line Reply with quote

I will like to know what could be the problem with this Samsung TV.

Samsung TV
Model Number: CL29M40MQ
Model Code: CL29M40MQ2XXAP
Chassis Number: K16A 29M40
Version SG01
Serial Number: AGAX34AQ100
Made in China


1. TV has Audio but no Picture only Horizontal Line at Middle of Screen.
2. DVD Player connect to RCA Jacks on Left side of TV, has Audio but no Picture only Horizontal Line at Middle of Screen.
3. TV goes OFF after 6 Seconds.


IC902 Pins 8
ATMEL738
24C16A
.PU27 A
IC201 Pins 90
TDA12005PQ/N1FC0
IC801S Pins 6
STRW6750F
IC301 Pins 7
LA78045
Integrated Circuit Vertical Output w/Bus Control Support for TV and CRT Displays
IC501 Pins 9
TDA6108AJF
Ring Test:
Yoke Horizontal = 8 Rings = 1.7 Ohms out of circuit.
Yoke Vertical = 8 Rings = 21.0 Ohms out of circuit.

Voltage Tested TV Standby:
C822 B+ 130V = 90.6V, C803 = 165.3V, IC801S Pin 1 = 163.5V, Pin 2 = 0.002V, Pin 3 = 13.99V, Pin 4 = 0.070V, Pin 5 = 1.616V, Pin 6 = 0.116V

Voltage Tested TV ON:
C822 B+ 130V = 123.1V, C803 = 154.7V, IC801S Pin 1 = 154.5V, Pin 2 = 0.063V, Pin 3 = 20.98V, Pin 4 = 0.132V, Pin 5 = 1.365V, Pin 6 = 1.227V, IC301 Pin 1 = 0.612V, Pin 2 = 15.95V Pin 3 = -8.20V, Pin 4 GND = -14.39V, Pin 5 = 0.649V, Pin 6 = 18.87V, Pin 7 = 0.597V, IC201 Pin 76 = 0.697V, Pin 77 = 0.680V, Pin 78 = 0.075V, CN503 Pin 1 B+ 210V = 195.2V, Pin 12 R = 1.096V, Pin 13 G = 1.099V, Pin 14 B = 1.070V, IC501 Pin 1 = 1.130V, Pin 2 = 1.154V, Pin 3 = 1.157V, Pin 4 = 0.009V, Pin 5 = 2.945V, Pin 6 = 196.5V, Pin 7 = 186.9V, Pin 8 = 186.8V, Pin 9 = 187.3V

Parts Tested:
R309, R310, C304, C410 470uF = 453uF -17uF ESR = .10, C409, R302, R303, R304, C302 10J, C822, C803 330uF 400V = 286uF -44uF ESR = .15, R311, R305, R315, C812, C808, R306, L302B, L303B, C301, DZ306, DZ303, DZ302, R318, R312, D305, R307, C312, DZ813, DZ807, DZ815, DZ816, DZ814, DZ812, D803, C313


1. Replaced IC301 LA78045
2. Resoldered Main Circuit Board.
3. Resoldered CRT Circuit Board.
4. Replaced IC902 24C16A
5. Installed 8 Pin IC Socket.


I would like to thank you in advance for your immediate assistance in this urgent matter. Should you have any further questions please contact me.


Yours sincerely,

Chester Grandison
386 Eastern Main Road,
D’Abadie
Trinidad, West Indies
Tel: (868) 761-7575 or (868) 371-5692
Skype: cg.grandison
E-mail: electricalwhiz@riddledtv.com
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PostPost subject: Advertisement

JTS1957



Joined: 21 Jan 2009
Posts: 2340
Location: Far, Far Away

PostPosted: Sat Mar 01, 2014 8:50 pm    Post subject: Reply with quote

What meter to check cap values / ESR etc.?
Do you have a scope? Vert Input Drive to IC301? Vert Output drive to yoke?
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