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Author Topic: LG-CT20S12E....Standby red light,No ocillation on FBT.  (Read 1230 times)

Offline ultrasonic™

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Re: LG-CT20S12E....Standby red light,No ocillation on FBT.
« Reply #40 on: December 17, 2010, 08:00:47 PM »
install ka muna ng adobe reader..

kong meron 8V sa pin37 ?  magdedeklara agad na def jungle  ??? ??? ???
defende yan sis  ;D

meron kasi kahit meron kaung Hvcc ay di naman nagrerespondz ang System con.  nyu...

nacheck nyu na ba ang mga ito:

kumpleto ba supply nyu sa PSU.
during & after oscillate..




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TV SERVICE MODE - http://www.elab.ph/forum/index.php?topic=2267.0;topicseen

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Re: LG-CT20S12E....Standby red light,No ocillation on FBT.
« Reply #40 on: December 17, 2010, 08:00:47 PM »

Offline Roland

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Re: LG-CT20S12E....Standby red light,No ocillation on FBT.
« Reply #41 on: December 17, 2010, 08:23:22 PM »
in some tv in which scl and sda ng the jungle is disabled(not use) we can easily decide kung sira ang jungle, pero sa unit na to nakita kong scl and sda of the jungle is connected to the scl and sda of eprom and system. Meaning, katextmate at kachatmate silang tatlo(or apat kasama ang tuner). So kahit may 8 volts sa pin37 at hindi nagoscillate we cant conclude na sira nga jungle.

Cguro dapat mo munang iresolve yong response ng system.

Tutok mo muna tester mo sa pin 4(signal pin) ng IC841 KA78R08. Pindutpoindutin mo power button(tact) tinangn ang tester kung pumapalopalo din ba, kung pumaplopalo then ok ang system. You can check now the pin2(IC841) kung may lumalabas na 8 volts at kung nakaabot ba to sa pin37, kung walang lalabas sa pin2 at merong boltahe 12 volts sa pin1 then sira IC na yan(IC841). Kapag ok lahat yan baka may tama nga jungle or sira crystal oscillator.

Tanggalin mo muna pansamantala yong R57 (100 ohms) connected sa pin41 ng system.

Good luck, malayo pala service mo, sana pagbalik mo maydala kang kape
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Philippine Electronics Forum

Re: LG-CT20S12E....Standby red light,No ocillation on FBT.
« Reply #41 on: December 17, 2010, 08:23:22 PM »

Offline J@M

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Re: LG-CT20S12E....Standby red light,No ocillation on FBT.
« Reply #42 on: December 19, 2010, 07:50:30 AM »
Sis Roland KA78R08 is good my supply xia 12v nd out 8v & ang alam ko nkkrating ung supply nya with pin 37 double check ko nlng..

Sa eeprom nman na try ko na hang pin #8 but nothing happen..
need ko ba replca new one? ndi po ba 2lad 2 ng mga TCL na kpag hang pin 8 supply eh nag ocillate ???

Nw focus muna ako sa syscon bka nga ndi nag reponce gawin me nlng mga advice nyo master ultra & mga masketers :) :)
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Philippine Electronics Forum

Re: LG-CT20S12E....Standby red light,No ocillation on FBT.
« Reply #42 on: December 19, 2010, 07:50:30 AM »

 

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