lg g2 d802 hardbricked no logo or download mode just black screen with white lines

hello please help i tried to install twrp through autorecovery apk and after rebooting my phone just shows black screen with white lines
no download mode nor lg logo display
phone recognised as marshall london device by my computer

My Yureka is hardbricked.

as i was having a bootloop problem when i tried to root my Yureka which was on Lollipop.
So searched for a softbrick fix guide and I used the yureka fastboot tools with cm11 stock by allflash.bat.
the procedure finished and the cmd window closed but when i pressed the power button it won't start.
when i connect it to the PC it won't recognize.
I think I have hardbricked my phone because i flashed a 32bit over a 64bit.
can anyone help me please?
some guide as to revive my phone?
Also my phone is not in the warranty period anymore.
I'll really appreciate if someone gives me a fix for this.

Mi 4i Hardbricked. Please Help!!

HI,
I have a Mi 4i. The phone is not responding. When I put it on charging, the LED does not light up.
My computer is not recognizing it. The phone is not going into fastboot either.
Please help

[Q] Hardbricked LG G3

I tried to flash a D850 with lg flashtool and it gave me a " partition change error ", so i've put the dll that doesnt verifie the version , the device start flashing but then it turned off and became a hardbrick.
So, i tried to unbrick it with BoardDiag and got the error "No response from the device. Check PMIC first and if still boot problem, replace AP" when i repeat i get "device was not found in dload trying flash programmer"
i get it that the BoardDiag doesnt do the AP msm8975ac , so if you could help it would be great

P.S. when i use androidbrick_G3_fix.exe , and choose D850 i get Hello requst error , but when i choose D851 i passes and no error found but cant repair because device log out and in after scan is over , so does that mean i have a D851 ??? coz it is written D850 in the back of the phone

i really need ur help :(

HardBricked Z1 with wrong connection

hi guys
my z1 was dead so i decided to use testpoint method
i wasnt home and i had no network connection so i could check which one is the testpoint
i had no idea this could go this bad!
so i started to check all of those gold points or whatever theyre name
and yup....wrongest one:( (attached)
i connected gnd to this one and it blinked like short connection?
and red blinking light went off
it came back when i disconnceted it but now that i saw which is the test point my pc dont recognize the phone even semc flash device
does anyone knows what this is?
is there anyway of fixing it?without mb replacments?
sorry for bad english

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Nexus 6P hardbricked, black screen

Hi, i dont know what happened before this state but now it is not booting and anything show on the screen. Device Manager shows Qualcomm HS-USB QDLoader 9008. Can this phone work normally or it is fully dead? Thanks in any case.