Element elefw605 power issue maybe?

[Demonata08]

Re: Element elefw605 power issue maybe?

You can get a cheap ch341 usb programmer on ebay and a 200mil wide SOP8 socket to program these eeproms. Difficulty is finding the bin file for your model. If freezing worked, you can freeze and read off the chip.

$15 for a preprogrammed eeprom isn't a big gamble to save a 60" TV.

I agree. freezing didnt work though. i will most likely buy the eeprom and dump it if anyone else has this horrible model tv.

[neilc6]

Re: Element elefw605 power issue maybe?

You can get a cheap ch341 usb programmer on ebay and a 200mil wide SOP8 socket to program these eeproms. Difficulty is finding the bin file for your model. If freezing worked, you can freeze and read off the chip.

$15 for a preprogrammed eeprom isn't a big gamble to save a 60" TV.

[Demonata08]

Re: Element elefw605 power issue maybe?

Follow the instruction is post #!8 or #19. If the tv starts up after the eeprom is frozen, replace it. If it doesn't, replace it anyway.

Yeah it didnt start up upon freezing. But I'll see if my mom wants to try the eeprom.

I was reading i could also get a programmer for not too much and write my own with a dump from a good tv. Is that correct?

If so, is there another resource for dumps besides this forum. It has only one element and the model doesnt match. I would rather buy a programmer if i could that way id have it if this happens again.

[neilc6]

Re: Element elefw605 power issue maybe?

Follow the instruction is post #!8 or #19. If the tv starts up after the eeprom is frozen, replace it. If it doesn't, replace it anyway.

[Demonata08]

Re: Element elefw605 power issue maybe?

I"ve replaced the eeprom on a few tvs (one Haier and one Element) with that same main processor. One started with freezing and the other didn"t. Both started after replacement of the eeprom with a preprogrammed one available online for that model. If you dont have the skills or tools to replace it, get a new main board.

When you say started with freezing? You mean it started up or is doing something similar to what mine is?

I can totally replace it. ive replaced a few already but they werent doing anything like this. which makes me skeptical. but this main is such a simple board i dont really see how it could be anything else. either that or the micro.

[neilc6]

Re: Element elefw605 power issue maybe?

I"ve replaced the eeprom on a few tvs (one Haier and one Element) with that same main processor. One started with freezing and the other didn"t. Both started after replacement of the eeprom with a preprogrammed one available online for that model. If you dont have the skills or tools to replace it, get a new main board.

[budm]

Re: Element elefw605 power issue maybe?

I do not know what else to tell you.

[Demonata08]

Re: Element elefw605 power issue maybe?

Read post #2.

I did read it. none of those symptoms really fit. The TVs power supply may think its on but the indicator lights dont show it to be on. If i hold a flashlight to it, theres no picture or anything.

[budm]

Re: Element elefw605 power issue maybe?

So is that something that would be symptomatic of an eeprom? the BL-ON doesnt ever seem to change.

Read post #2.

[Demonata08]

Re: Element elefw605 power issue maybe?

As I explained earlier in post #30, If the TV is on and running if you pull the power cord and then plug it back in, the TV will come back on because it will remember the last state before losing power, that what most TV will do. At this point, the power supply/LED driver board is getting the PS-ON but not the BL-ON and Dim control signals to turn the backlights on.

So is that something that would be symptomatic of an eeprom? the BL-ON doesnt ever seem to change.

[budm]

Re: Element elefw605 power issue maybe?

As I explained earlier in post #30, If the TV is on and running if you pull the power cord and then plug it back in, the TV will come back on because it will remember the last state before losing power, that what most TV will do. At this point, the power supply/LED driver board is getting the PS-ON but not the BL-ON and Dim control signals to turn the backlights on.

[Demonata08]

Re: Element elefw605 power issue maybe?

That is what I thought because no way to have PS-ON signal higher Voltage than the Standby Voltage as explained earlier in post #26, there is nothing wrong with the 5VSB at all. When something does not make logical sense that is when it is need to be verified. Too bad we had to spend 28 threads to prove that there is no problem with standby Voltage.
Point A is the +5VSTBY.
So back to then main board, try cooling the EEPROM the apply AC to the TV and see what happen.

Ill try that and sorry for the confusion.

So what ive learned so far is there seems to be no fault on the power board. When the TV is plugged in it immediately sends that ps on signal. Does that mean it immediately tries to turn on? Thats what ive kinda been thinking

[budm]

Re: Element elefw605 power issue maybe?

That is what I thought because no way to have PS-ON signal higher Voltage than the Standby Voltage as explained earlier in post #26, there is nothing wrong with the 5VSB at all. When something does not make logical sense that is when it is need to be verified. Too bad we had to spend 28 threads to prove that there is no problem with standby Voltage.
Point A is the +5VSTBY.
So back to then main board, try cooling the EEPROM the apply AC to the TV and see what happen.

[Demonata08]

Re: Element elefw605 power issue maybe?

They are what I expected.
OK, now check the Voltage on CN3 pin 6 (+5VSB) and tell me what you get.
Then disconnect AC from the TV then check the resistance between point A and CN 3 pin 6 (+5VSB).

Yeah im realizing now i must have been one off on the pinout like you were saying. Thats 100% my bad :/

the 5vsb is 5.20

the resistances between 5vsb and pin A is .01

[budm]

Re: Element elefw605 power issue maybe?

A: 5.20
B: 12.48
C: 24.24
D: .10 (And fluctuating)
E .5 (And fluctuating)

PS_ON: 4v's

They are what I expected.
OK, now check the Voltage on CN3 pin 6 (+5VSB) and tell me what you get.
Then disconnect AC from the TV then check the resistance between point A and CN 3 pin 6 (+5VSB).

[Demonata08]

Re: Element elefw605 power issue maybe?

Too bad the bottom side picture of the power supply board to too blur.
So please connect everything back up and check the Voltages on test points A ~ E against cold side circuit ground.
BTW, please also report the Voltage on the PS-ON pin (CN3 pin 5) again.
Pictures provided by shojimmy.
Element MHC180-TF60SP1 Power Supply / LED Driver Board ELEFW605
https://www.shopjimmy.com/element-mh...t-inverter.htm

A: 5.20
B: 12.48
C: 24.24
D: .10 (And fluctuating)
E .5 (And fluctuating)

PS_ON: 4v's

[budm]

Re: Element elefw605 power issue maybe?

Too bad the bottom side picture of the power supply board to too blur.
So please connect everything back up and check the Voltages on test points A ~ E against cold side circuit ground.
BTW, please also report the Voltage on the PS-ON pin (CN3 pin 5) again.
Pictures provided by shojimmy.
Element MHC180-TF60SP1 Power Supply / LED Driver Board ELEFW605
https://www.shopjimmy.com/element-mh...t-inverter.htm

[Demonata08]

Re: Element elefw605 power issue maybe?

I tried to trace the 5vsb pin back but I can't make out the traces.

Yeah thats pretty unfortunate. im not a great photographer by any metric. And my phones camera isnt the best. i dont think i could get it down to the traces without horrible glare or blurriness

[R_J]

Re: Element elefw605 power issue maybe?

I tried to trace the 5vsb pin back but I can't make out the traces.

If you disconnect the main board from the power supply the 5vsb reads 5 volts correct?
If it does try loading the 5vsb with a ~20Ω resistor that would draw 250ma, it should supply that no problem and the 5 volts should stay up. if it does try ~10Ω as a load.

[Demonata08]

Re: Element elefw605 power issue maybe?

I included the important parts of the main also