Samsung UN60EH6000 wont come on after lightning strike.

[karthur]

After much searching, I finally found a datasheet on this component. This component is made by "Diodes Incorporated". This is a voltage regulator. A link to the data sheet is here.

https://cdn.badcaps-static.com/pdfs/...fca50db500.pdf

[karthur]

I thought you said IC601 was a double diode. I have been treating and testing it as such.

Refer to post#16 above.

[Davi.p]

IC601 stands for Integrated Circuit 601, why you tell about anode, cathode?

[karthur]

When I tested the IC601, I get a reading with the "+" probe on the anode and "-" on the cathode. When I reverse the leads, shouldn't this now read "0" for a good diode? I get a reading >0 when I do this for both legs. Does this not mean the diode is faulty?

I tested IC601, IC602 and IC204, To me all three seem to be faulty. Am I testing these wrong?

[Davi.p]

probably diodes are a previous fault..

[karthur]

These are protective diodes and they are located at the AV signal input; if something was connected during lightning, then the discharge passed through this input and could kill the processor.

Which ones are you referring too? If you are talking about the D407 and D409 that I found burned, these seem to be diodes and upon more checking are not good. One is totally open in either direction.

These diodes are close to the RCA input jacks on the board. The only port that was connected during the strike was HDMI1.

[lotas]

These are protective diodes and they are located at the AV signal input; if something was connected during lightning, then the discharge passed through this input and could kill the processor.

[Davi.p]

those two are double diodes, check them in diode mode,

no power on board..
test ic601 as the other ones, thus in volt on the tab, if it's 3,3v is ok, if no short (0v) on the diodes then ic901 reprogram..

[karthur]

I did check the D407 and D409, but not 100% sure what they should test. They were 0v on one leg and 3.5v on the other (See post #15). I tested IC601 on the board with power on it and without power diode mode. Attached are the results.



I also tested some of the other voltage regulators that looked similar in diode mode. The readings were .3 and .6 one one and .5 and .6 on another one. Not really sure if I am doing this right or not.

[Davi.p]

1) test as the other ones 2) test them..

[karthur]

Do I need to remove the IC601 from the board to test it? Do you think the D407 and D409 are good?

[Davi.p]

Sorry not IC206 but IC601, to the right bottom, those two are double diodes, check them in diode mode, the ic901 must not be changed but only programmed, i don't have the dump..

[karthur]

Here is what I got when I checked IC202 and IC204. IC 202 was 3.3V on the pin 1. IC204 was 1.5v on the tab. I could not find IC206. If you found IC206, can you point to it on the board?

When looking for the IC206, I noticed a couple "Burned" components. These are D407 and D409. I take it these are voltage regulators. Here are the readings I get on them. Are these OK?

"IF" I do need a new flash for the IC901, where do I get the file to flash on it?

Thanks

[Davi.p]

Check the regulators IC204 (1,5v on the tab), IC202 (??V), IC206 (3,3v on the tab). This chassis really sucks, the main flash ic is integrated to the SOC!!
if regulators appears ok it must be reprogrammed the SPI flash IC..

[karthur]

Here is a picture of the back of the main board. Also the measurements you asked for.

[Davi.p]

i think you must reprogram IC901, first however you must check some tensions, can you photograph the back of main board? Check voltage on ic905 pins, and on every mb coil except those 4 grouped..

[karthur]

Picture of the T-Con Board

[karthur]

Picture of the main board.

[karthur]

Well if we don't have pictures of PSU main etc and then the pin connectors from board to board with the legend, that would help. Also lightning (if it was) will destroy PSU or main generally I would think. How do you know it's lightning strike? Did other things in your house fry or just the tv?

Yea. There was some other things in the house that would not work after the lightning strike (Alarm system, HVAC unit, Garage door opener and one refrigerator). I did check the connecters on the PS board in my original post, but I guess they dont mean much unless you know what they should be. My bad.

I DO NOT have a red standby light and I initially suspected the PS board, but after checking the pins, I thought the PS was good.... maybe not.

Below are the values I got along with the values printed on the board.

On the power supply board, 14pin connector:
1 :12.7 Vdc (PWM_D1M 13v)
3 :12.7 (B13V 13v)
5 :12.7 (BLU_on/off Vamp)
7 :12.7 (GND Vamp)
9 :0 (GND)
11 :5. (A5v)
13 :5. (Power_on/off 5v)

Here is a full image of the PS board

[EazyBone]

Well if we don't have pictures of PSU main etc and then the pin connectors from board to board with the legend, that would help. Also lightning (if it was) will destroy PSU or main generally I would think. How do you know it's lightning strike? Did other things in your house fry or just the tv?