It does not leave stand and only premier chassis 5800-A3Y13Y-00
Thanks friend for your help
Well, check welds
The voltages of
LA7841 WHAT I HAVE ARE
PIN 1 = 0V
PIN 2 = 24.5V
PIN 3 = 26V
PIN 4 = 2V
PIN 5 = 1.9V
PIN 6 = 26V
PIN 7 = 0.60V
Already check short between pins and it's ok
Now I don't know what happened. The vertical line is not visible, it is sculpted that turns on but does not turn on the screen. Check 180 10uf filter for 250v replace it verify the resistance has a jumper is OK check the diode measures well. And I have only 135v for the screen
Hello friends good afternoon, a thousand apologies for the delay I have problems with the Internet. Here I present the voltages I have
Still forcing the boot. 113 + b
In the HVCC 5v
For 5v memory
Voltages are present in the tuner
180v for the screen you can see that the cannons are turned on, you can still see the line in the middle of. The screen vertically.
The Q611 transistor, which is the one that short-circuited it, measured it and makes a good impression that it seemed good. Replace it anyway. I hope more options friends thank you and excuse me please god bless you
I also wanted to tell you that the diagram provided by the horizontal figure as a 2sd2499 that is with resistance and diode. The one that has a C5855 is with dampers, I think ... Not if it's the horiginal. Although I put the focus of 200w but still does not turn on alone
Ideally, turn on naturally, that is to order ON.
Perform and comment the following tests:
1 ° What voltage is obtained in the collector of the horizontal DRIVER transistor in both STBY and ON.
2 ° What voltage is obtained on pin13 (Key) of the microprocessor Both in STBY and ON.
3 ° What voltage is obtained in pin7 (Power) of the microprocessor in both STBY and ON.
Does this diagram correspond to your circuit?
https://elektrotanya.com/skyworth_3y13_-_lc863224c-56m8_,_la76814b_,_la7840_,_la4285__sch.pdf/download.html
Good morning my friend, that is the diagram that you gave me because it is. Different in. Two things in the micro the license plate you have is LC863224C IN THE DIAGRAM, it appears as LA8633XX
AND IN THE HRIZONTAL the registration is C5855 AND IN THE DIAGRAM it is 2sd2499. Very well, guide me through the diagram
On pin 7 power) of the microphone there is 0v when given on it remains the same 0v
In the transit driver 2sc2482 in the middle of the collector terminal there are 113v the same as in the + b because they are connected by means of a resistor when the on button is pressed, the voltage does not vary.
In pin 13 key in sntandby 0v when giving power 4.8v appear
The results are showing that the problem is clearly in the microprocessor or EEPROM.
Check the presence of the voltages or working conditions of the microprocessor and EEPROM:
5V voltage
RESET voltage
Voltage on the oscillation crystal pins and the good condition of this component.
Make sure the good condition of all the filter capacitors in the voltage line that feeds (5v) to the micro processor.
-Heat the glass pins and try to turn on the TV ..
Replace the EEPROM with a new one previously recorded with the DATA or brand and model information.
Good afternoon friend thanks for the answer .. To try with. Another eepron can be from another chassis with the same characteristics? Could you please tell me where this mic is powered
What voltage would it have on the reset pin?
The oscillation crystal is what will be of the jungle one of 2 legs as of. Can
IC001 microprocessor:
Pin12 = VDD = 5v.
Pin 17 = RESET 4v
Crystal X001 =
Pin10 (XTF1)
Pim11 (XTF2)
EEPROM IC002: Pin8
Put 8 of the eepron 4.8v
Micro PIN 32v 4.8v
PIN 12 vdd 4.7v
Pin 17 reset 4.7v
PIN 10 xtf1 1.8v
Pin.11 xtf2 2.2v
Wax this crystal right ??
https://mega.nz/#!uiZhxQza!TGhylN-FJEu1JDsynS8WfPx8bKpOEKRJX_xkTIuHmsg
The glass is the one with the location code X001 on the card and near the microprocessor
Could you help me in telling me if I have to make any modification when putting that mic since the one that has the TV is an LC863224C And also in confirming me if the link of the photo is the crystal I also have one of those. I also have a jungle LA76814K .. What do you recommend? Thanks for the help friend
The microprocessors are strict in their replacements because they have to put the precise series, otherwise they will cause some side effect at work
The IC jungle crystal is unrelated to the fault.
The one that has to be changed is the microprocessor crystal.
Yes ... On the POWER pin there must be voltage to the ON command