Re: Sony KDL-40EX710 - Lightning strike and power surge
Ah!! looks like the whole TV is bad... Checked the voltages again, There was no power going into the TCON board.. I jumped 12V to TCON now the Error code goes to 7.
Looks like a shot TCON Board. I am not sure what else I would have to change.. Is it worth changing it?
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Re: Sony KDL-40EX710 - Lightning strike and power surge
I have replaced the IC - CXA3809M => IC6501
Now the RED LED lights up and I have a 3 blink error code.
Can somebody help me please.Leave a comment:
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Re: Sony KDL-40EX710 - Lightning strike and power surge
I am really tired, Thanks all for helping me out, I will post updates when I fix this board
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Re: Sony KDL-40EX710 - Lightning strike and power surge
...Last edited by dick_barton; 06-13-2017, 10:54 AM.Leave a comment:
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Re: Sony KDL-40EX710 - Lightning strike and power surge
They are 0 Volts.
How can I check if CXA3809M is switching? IC6501
CXA3809M => IC6501 => Pin 20 => 10.2V
Looks like the IC is not switching on with 10.2V
I do not see any voltage at T6101 Pin5.
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Re: Sony KDL-40EX710 - Lightning strike and power surge
So the opto's should not be the problem.
Can you check that IC6800 Pin 5 is at 12V and IC6800 Pin 4 is at 9VLeave a comment:
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Re: Sony KDL-40EX710 - Lightning strike and power surge
What voltage do you have on Pin1 of IC6802 and chassis and then on Pin4 IC6800 and chassis?Leave a comment:
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Re: Sony KDL-40EX710 - Lightning strike and power surge
What voltage do you have with the meter probes set to DC placed across Pins 1 & 2
Only one of the administrators can change a Post Title or contents of a post.Leave a comment:
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Re: Sony KDL-40EX710 - Lightning strike and power surge
I did replace the component, still the same voltage on pin 1 and 2
I also noticed something, i do not see the link in the board from PIN 1 of 6100 to Pin 4 of IC6800. Am I reading it wrong?
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Re: Sony KDL-40EX710 - Lightning strike and power surge
PH6100 Pins 1-2 should just have standard diode voltage as you mention for the others so I would also consider replacing it.Leave a comment:
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Re: Sony KDL-40EX710 - Lightning strike and power surge
OK, This seems to be interesting.
PH6300 - PIN 1 and 2 = 1.09V - Turned on
PH6302 - PIN 1 and 2 = 1.05V - Turned on
PH6100 - PIN 1 and 2 = 8.7V - Blown out?
PH6201 - PIN 1 and 2 =0.96 V - Turned on
Looks like something is wrong with PH6100 - I was expecting around 1.2 to 1.4 but its 8.7V looks like it must have blown out.Leave a comment:
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Re: Sony KDL-40EX710 - Lightning strike and power surge
Yes.. I have disconnected all other boards. Just working on Powersupply board.
I figured it out, I am looking for the reason why the PSU is shutting down main power once I connect a 1K resistor from STBY_3.3V to Power_ONLeave a comment:
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Re: Sony KDL-40EX710 - Lightning strike and power surge
You forced power board on with main board disconnected and voltages were temporaryLeave a comment:
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Re: Sony KDL-40EX710 - Lightning strike and power surge
both are fine.. I get all the 12V outputs for a second and then turns off.
I dont understand 001:15E OVP in the schematic Page2. where does it come from?Leave a comment:
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hi everyone,
my parents in law have seen their Bravia Sony LED 32EX600 TV set stop after a lightning strike. After being plugged to mains, it shows nothing no power LED on bottom left shines.
On the power PCB (GE3b, attached pic), I chacked the fuses and the only roasted one is R6536 : 0.47 ohms, 1/2W. After replacing it, I made some voltage measurement with ref to the chassis :
- the 450V/150uF capacitor voltage when plugged is normal at 394V
- from connector CN6150 (15 poles)
STBY normal 3.3V -> I shunted it to 3 (POWER ON) and 11 (BL ON) and unplugged...06-28-2023, 02:43 AM -
Hi,
I’m trying to fix an HP EliteBook 840 G6 that stopped working after a lightning storm.
– Charger is OK and 19V is present at the motherboard.
– No charging LED, no fan, no reaction.
– I don’t see any 3.3V or 5V near the coils.
– Battery is unplugged.
– I’m new to board repair but can use a multimeter.
I added a clear photo of the board.
Any idea where to start or what to check next?
Thanks a lot for your help!...07-01-2025, 10:45 AM -
We had a lightning strike a few days ago really close to my house. My Samsung UN60EH6000 was on when it hit. Afterwards, the TV would not come back on.
I had repaired this TV a few years back by replacing the T-Con board. (The post I had on this is repair is here.)
When I turn on the TV, I don't get any start-up melody. The screen just dimly flickers around the edges.
Here is what I have checked.
On the power supply board, 14pin connector:
1 :12.7 Vdc
3 :12.7
5 :12.7
7 :12.7
9 :0
11 :5.
13 :5.... -
THE LIGHTNING:
This was a very close strike, blew a 15 amp breaker for all ceiling lights in home AND could smell ozone for a few minutes after strike.
Very close and probably a very strong EMP.
THE TV:
No standby LED. Some voltage from PSB (not totally dead).
But found a kit of ALL 4 circuit boards for $55.
At first thought, this will fix my TV.
But then lightning has the ability to totally fry semiconductors. Which would include any or all of the PCBs. However, the display is one big semiconductor and given... -
Hello Everyone.
This powerful amplified subwoofer doesn't make any sound after lightning striked near the house were it was plugged in.
It consists in :- a power board were the full H bridge class D amplifier and main power rails are located
- a preamp board (ref. F.01U.299.771) receiving 2 symetrical inputs(IN1, IN2), a digital chain (A-D converter -> Digital Signal Processor -> D-A converter) and a micro controler in charge (at least) of the human interface (lcd display and 1 rotating button)
human interface is working fine
Input levels are...01-23-2024, 10:21 AM
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