Re: PSU fault KPL-L01 IC AP3041 TV Haier 50 "Mod 50YAC

LEDs externally tested with Drivers.

Vdc: 47.7
mA: 0,155...

Re: PSU fault KPL-L01 IC AP3041 TV Haier 50 "Mod 50YAC

To take off this headache, better buy a Universal inverter.

Re: PSU fault KPL-L01 IC AP3041 TV Haier 50 "Mod 50YAC



Hi Dick, thanks for answering, when I turn on the TV is that it flashes only once the LEDs, it is not flashing continued. When you mention that I entered the menu to regulate the level of the Backlight, I commented that I did not enter the service menu for two reasons first I do not know how to enter the menu and second that I do not know what parameters changed, I should check the main to verify how enter, since, this tv is a hybrid, distributed by Haier, made by Leader (another Chinese brand that I have...

Re: PSU fault KPL-L01 IC AP3041 TV Haier 50 "Mod 50YAC

Today I started testing the LED strips again to discard if there were failures in the strip and take a chance, with a LED driver that I have from my old Aquarium I managed to turn on the 68 LED strip (divided into 4 sections of 17 LEDs each section and 4 led + and 4 led cables-) placing the multimeter in amp scale and the total consumption was 0.133 A or 133 mA, I managed to rule out that the total consumption of the LEDs does not exceed what the 280 mA card marks, now , seeing that the problem is the inverter of the source,...

Re: PSU fault KPL-L01 IC AP3041 TV Haier 50 "Mod 50YAC

I have also checked resistors, capacitors, schottky rectifier diode, but the output voltage is not 30 if not 33.1 v, today I will test the 817c optocouplers and also the TL417 with a tester that I observe online.

Re: PSU fault KPL-L01 IC AP3041 TV Haier 50 "Mod 50YAC



these are the values that I measured...

Re: PSU fault KPL-L01 IC AP3041 TV Haier 50 "Mod 50YAC



thanks for answering me....

Hello, I have a problem with the PSU of the TV Haier 50 "same PSU as the Sansui model STY095 and other Models, I have replaced all the LEDs, two mosfet aod4286, check resistors, checked filter / inflated capacitors and nothing. Measuring voltage on pin 3 of the ic ap3041 I have 1.65vdc, but I miss that when I place the tip of the fluke the LEDs turn on, thinking that it would be a false contact, I rectified the welding but the problem continues.On the board is present 5, 12 vdc but I have raised the 30vdc to 33vdc. Any other help would be welcome to solve the problem.

Re: Sansui 55" LCD T V Model STY0955 (Backlight issue)

Hello, I have a problem with the PSU of the TV Haier 50 "same PSU as the Sansui model STY095, I have replaced all the LEDs, two mosfet aod4286, check resistors, checked filter / inflated capacitors and nothing. Measuring voltage on pin 3 of the ic ap3041 I have 1.65vdc, but I miss that when I place the tip of the fluke the LEDs turn on, thinking that it would be a false contact, I rectified the welding but the problem continues.On the board is present 5, 12 vdc but I have raised the 30vdc to 33vdc. Any other help would...