Samsung qn55q60raf powercycle

[VikramB]

Re: Samsung qn55q60raf powercycle

I realise it’s an old thread but did the OP manage to root cause the problem? Facing a similar issue on my 55” Frame TV.

[nomoresonys]

Re: Samsung qn55q60raf powercycle

The testing is pretty simple, unless there's some specific way the tv is made that requires a different method, but try it this way, if you are having a powercycle/rebooting deal, start with unhooking the panel from the t-con, or unhook panel from the mainboard if there's no stand alone tcon, try tv, did it stop cycling? if yes problem in panel or panel connectors, if it's still cycling problem could be on the mainboard or cable, on a lot of samsungs not all, if you unhook the cable from powerboard to mainboard then plug tv into power, the backlights will come on and stay on, this usually means that the backlights and powerboard are ok.

[nomoresonys]

Re: Samsung qn55q60raf powercycle

If you have 2 ribbon cables going to the panel, you unhook one side then try tv see if it quits cycling, then try the other side same way see if there's anything on the display might not be some tvs may need to be connected up to get a display, then if it's still cycling after that, unhook both cabes and see if it's still cycling and carry on as above.

[jneupauer@sbcglobal.net]

Re: Samsung qn55q60raf powercycle

QN50Q6DTAFXZA
So, I have found that Qleds ,single or dual cable , have a loop to enable the power supplies located on the main board. any disconnection of ldvs cables will stop the restarting of the TV.
also, no proof yet, using the tape trick may damage the main board power supplies by disconnecting the protection loop and enabling the power on loop.
i think that i have damaged two boards.

i am still trying to figure out looping.

possible pinout for the cable below

1 FB_TRDY_1 2 GND 3 PANEL_3.3V_PW 4 PANEL_3.3V_PW
5 FB_VCOM1_2_CELL 6 VCOM1_CELL 7 VCOM2_CELL 8 VCOM3_CELL
9 VSS_OUT1_CELL 10 VOFF_-11V_PW 11 VGHD 12 CKV1_GOA
13 CKV2_GOA 14 CKV3_GOA 15 CKV4_GOA 16 CKVB1_GOA
17 CKVB2_GOA 18 CKVB3_GOA 19 CKVB4_GOA 20 STVP1_GOA
21 LC1_VGP1_GOA 22 ST_GOA 23 DEMURA_SSPFRM_SPI 24 DEMURA_SSPCLK_SPI
25 DEMURA_SSPHOLD_SPI 26 DEMURA_SSPWP_SPI 27 DEMURA_SSPRXD_SPI 28 DEMURA_SSPTXD_SPI
29 DEMURA_SSPFRM_SPI 30 SFC 31 DEMURA_SSPWP_SPI 32 DEMURA_SSPRXD_SPI
33 DEMURA_SSPTXD_SPI 34 DEMURA_SSPFRM_SPI 35 DEMURA_SSPCLK_SPI 36 DEMURA_SSPHOLD_SPI
37 GND 38 VCCA_1.9V_PW 39 VCCB_1.8V_PW 40 GND
41 N.C. 42 PI_DSF_MON 43 GND 44 TX_CH0_A+_USIT1
45 TX_CH0_A-_USIT1 46 GND 47 TX_CH1_A+_USIT 48 TX_CH1_A-_USIT
49 GND 50 TX_CH2_A+_USIT 51 TX_CH2_A-_USIT 52 GND
53 TX_CH3_A+_USIT 54 TX_CH3_A-_USIT 55 GND 56 TX_CH4_A+_USIT
57 TX_CH4_A-_USIT 58 GND 59 TX_CH5_A+_USIT 60 TX_CH5_A-_USIT
61 GND 62 TX_CH6_A+_USIT 63 TX_CH6_A-_USIT 64 GND
65 TX_CH7_A+_USIT 66 TX_CH7_A-_USIT 67 GND 68 TX_CH8_A+_USIT
69 TX_CH8_A-_USIT 70 GND 71 TX_CH9_A+_USIT 72 TX_CH9_A-_USIT
73 GND 74 TX_CH10_A+_USIT 75 TX_CH10_A-_USIT 76 GND
77 TX_CH11_A+_USIT 78 TX_CH11_A-_USIT 79 GND 80 SFC
81 GND 82 PI_DSF_MON 83 PORTNUM 84 VCCA_1.9V_PW
85 VCCB_1.8V_PW 86 LL_CELL 87 LH_CELL 88 HAVDD_8.5V_PW
89 UL_CELL 90 UH_CELL 91 AVDD_17V_PW 92 AVDD_17V_PW
93 AVDD_17V_PW 94 AVDD_17V_PW 95 N.C. 96 FB_TRDY_2

[nomoresonys]

Re: Samsung qn55q60raf powercycle

Doubt very much taping will damage ANYTHING, haven't seen it in my work or on any forum, more likely getting broken mainboards.

[Ukdigger]

Re: Samsung qn55q60raf powercycle

Samsung Smart QLED TV Keeps Restarting! Fixed with TAPE! (Model QN50Q60TAF)
https://www.youtube.com/watch?v=YDm0Hhcf_U8