Re: Panasonic TH-L32X20S Protect, Power Led blingking one times.
Ok, I'll do it....
bangjay
Member
Last Activity: 11-29-2022, 09:22 PM
Joined: 04-25-2016
Location: surabaya
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Re: Panasonic TH-L32X20S Protect, Power Led blingking one times.
dick_barton, i have a new progress, today i am trying to lift the transformer on the inverter block and measure it for each pin. all transformers have the same value. pins 5 & 6 = 1.025 and pins 7 & 8 = 1.025.
then I soldered it again to the board and turned on the tv. after waiting for about 30 minutes the tv is still on. but not even 1 hour the tv turns off again.
Previously, this TV could only be on for about 5 to 10 minutes
I suspect the components around the transformer,...Leave a comment:
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Re: Panasonic TH-L32X20S Protect, Power Led blingking one times.
Pin 1 connects to pin 2 and pin 3 connects to pin 4
so i measured pins 1 & 3 pins 5 & 6 and pins 7 & 8
this is the measurement result:
T7801 = 1&3 is 0.005, 5&6 is 1.015, 7&8 is 1.016
T7802 = 1&3 is 0.005, 5&6 is 0.999, 7&8 is 1.002
T7803 = 1&3 is 0.005, 5&6 is 1.018, 7&8 is 1.018
T7804 = 1&3 is 0.005, 5&6 is 0.990, 7&8 is 0.993
Please correct me if my measurement method is wrong, i am...Leave a comment:
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Re: Panasonic TH-L32X20S Protect, Power Led blingking one times.
Hi dick_barton, thank you still helping me,
this is the voltage from TP7800 to TP7807.
TP7800 = 1.10V
TP7801 = 1.08V
TP7802 = 1.10V
TP7803 = 1.08V
TP7804 = 1.07V
TP7805 = 1.05V
TP7806 = 1.10V
TP7807 = 1.11V...Leave a comment:
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Re: Panasonic TH-L32X20S Protect, Power Led blingking one times.
Yes, the drop has an effect on the back lights, they flashing when the voltage drops.
This is the data from pin 2 on the IC STR-H3475
if standby mode the voltage is 3.3V
when the set is running the voltage is 0.07V
and when the set is off protect the voltage is 3.29V....Last edited by bangjay; 03-25-2021, 08:04 PM.Leave a comment:
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Re: Panasonic TH-L32X20S Protect, Power Led blingking one times.
Hi dick_barton
I have tested the voltage on pin 19 and 20.
When in standby mode the voltage is
Pin 19 = 0.11V and Pin 20 = 0.0V
then when the tv is on
Pin 19 = 2.28V and Pin 20 = 1.56V
and when the tv turn off protect
Pin 19 = 0.04V and Pin 20 = 0.01V.
I noted that when the TV was on, the voltage on the Pin 20 and 19 dropped to 0.98V for several times and it happened so fast.
What do you think about the results...Leave a comment:
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Re: Panasonic TH-L32X20S Protect, Power Led blingking one times.
Ok, I will check it soon and i will notify you
thank you...Leave a comment:
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Re: Panasonic TH-L32X20S Protect, Power Led blingking one times.
Thank you for your attention. how to check if ccfl has a problem.
I have tried turning on the tv without the ccfl lamp by removing the socket to the ccfl lamp, but within a few minutes the tv turned off again.
I suspect a problem in the inverter, but I'm still not sure....Leave a comment:
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Re: Panasonic TH-L32X20S Protect, Power Led blingking one times.
Thank you, I will try it and will update later...Leave a comment:
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Re: Panasonic TH-L32X20S Protect, Power Led blingking one times.
Thank you for your attention. how to check if ccfl has a problem.
I have tried turning on the tv without the ccfl lamp by removing the socket to the ccfl lamp, but within a few minutes the tv turned off again.
I suspect a problem in the inverter, but I'm still not sure.Leave a comment:
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Panasonic TH-L32X20S Protect, Power Led blingking one times.
Dear Master,
Please Help,..
I have Panasonic TH-L32X20S LCD TV, the problem is the tv suddenly turns off after a few minutes and the power led blinking one times.
Based on information from the service manual it is a problem with BACK LIGHT_SOS.
I have checked the voltage, Stby 6Vtuner is good, 3.3V is good, 12V is also good, 17V reads 18V and 32v reads 30V sometimes 32,V 34V, back to 30V,
I did the test before the TV dead protect.
I send the photo of P Board and the inverter circuit schematic.... -
Re: Sharp LCD TV LC-32L50M blinking red light 5X
Hi Fredaelsadany
Are you sure the problem is on the mainboard? if I replace the main board this issue will be resolved?
Please help,
thank you before....Leave a comment:
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Re: Sharp LCD TV LC-32L50M blinking red light 5X
This is a photo of the mainboard. and I also attach the schema for this mainboard. please check, if incomplete please let me know.
Thank You...Leave a comment:
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Re: Sharp LCD TV LC-32L50M blinking red light 5X
Here I attach the results of testing the voltage on the main power unit.
1. When i press the power button the PFC output voltage is 390Vdc. but after about 6 seconds, the voltage dropped to 312Vdc.
2. STBY_CONTROL is 0Vdc.
3. All Pin 4 Optocopler is 1.8Vdc.
4. Pin 6 NCP 1337 (IC 7201) is 1.8Vdc.
thank's before....Last edited by bangjay; 04-30-2016, 11:40 PM.Leave a comment:
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Re: Sharp LCD TV LC-32L50M blinking red light 5X
Thankyou for the response, here i attach the manual service for your reference
thank you before....Leave a comment:
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Re: Sharp LC-52D85U Won't turn on
thank you,...Leave a comment:
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Sharp LCD TV LC-32L50M blinking red light 5X
I had problems with Sharp LCD TV LC-32L50M, current conditions, if I turn it on the LED indicator green and red flashing alternately several times, after that only a red LED that flashes 5x, when the red light flashing, all the buttons does not work.
according to my analysis, this tv failed to start because of a protected, I've tried to go to service mode with Vol - and TV / Video and plug the power, but the tv screen was still dark, there is no display anything on the screen. and LED indicators remain blinking as described above.
I've tested the voltage in the power... -
Re: Sharp LC-52D85U Won't turn on
I had problems with Sharp LCD TV type LC-32L50M, current conditions, if I turn it on the LED indicator green and red flashing alternately several times, after that only a red LED that flashes 5x, when the red flashing, all the buttons do not work.
according to my analysis, this tv failed to start because of a protected, I've tried to enter service mode with Vol - and TV / Video and plug the power, but the tv screen was still dark, there is no display anything on the screen. and LED indicators remain blinking as described above....Leave a comment:
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