Videocon Champ 14 Av solution

If your videocon champ 14 Rf or cable tv ok but AV not working mean when you press AV button on your remote it does not respons.
I first change a blank memory ic
2nd croma ic LA76931K 7N 5AP3
When it in same fault
3rd goto service mode
Menu 1947
Goto page no 7 by press vol+
There a option opt av system
Change this value zero to one
Now exit servise menu press standby button
Not you can enjoy AV now
If any query comment me in down comment box.

HCL TFT185W80PSA+ MONITOR DEAD SOLUTION

WHEN A DEAD MONITOR HCL TFT185W80PSA+ COME
I FOUND SOME PART FAULTY AND REPLACE THIS AND NOW OK
TL431
TOP255EN
DIODE - SR5100

Cat vision model IN2-M-1E-850 LE

After some time Rf signal not coming
First check ic supply 24v
Second pin no 1 input Rf dB (80)
Third pin no 7 output Rf dB +dB of input
If any problem change this ic
Here these image

Rf signal comming but very weak 

First check rf ic pin no 1 signal that weak so 

Change the bo ic (optic ic )

Now input of rf ic ok anf all are ok

Samsung CZ -20R1V LINERTY PROBLEM

BRAND = SAMSUNG

CHASIS = AA41 - 00849C

SYSTEM = TDA 9381PS/N2/3I1415

MEMORY = A510C

SMPS = 5Q0765RT

SMPS TRANSFORMER = AA 26-001

EHT= AA26- 00201A

HOR OUT PUT = D2499

HOR OSC COIL = 4150

VERTICAL = LA78040

AUDIO = TDA 8943SF

TUNER = AA40 - 00076A

REMOTE 

SERVICE CODE

This linerty problem solved by changing 681pf / 1Kv 2nos
552pf  / 1600v def

 

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