Re: Hisense 65H8608 screen cycling thru colours
You were spot on angelos. Removing cleaning and reseating the LVDS cable brought the tv back to normal.Thanks so much for helping to solve this problem and I would say it confirms exactly what you stated about the tcon getting 12v but no signal gives the screen test mode.
Helikvar
Member
Last Activity: 12-06-2023, 02:26 PM
Joined: 07-06-2018
Location: Pennfield
-
Re: Hisense 65H8608 screen cycling thru colours
I was thinking roughly the same thing.Its certainly worth a try.I'll post back later with the results .Leave a comment:
-
Hisense 65H8608 screen cycling thru colours
A customer just messaged me and after moving from one location to another and plugging in their hisense tv all it does is cycles thru the different colors like its in some kind of test mode.Standby light is red and remote is unresponsive.Have tried unplugging it but no change .Tv was fine before they moved and this happened right after they moved into their new home.Any ideas. -
Re: LG 47LN5400 Replacement backlights
Thanks for the replies .I figured China has pretty much all the say in this matter.I will just have to find a better supplier on ali-express if thats possible.And hopefully turning down the backlights will extend the repair for a year or two .Leave a comment:
-
LG 47LN5400 Replacement backlights
This is more of a general question on replacement led backlight sets .Replaced a full set about 5 months ago on the LG 47LN5400.Set went black again and after opening it up an open led was found.Set was purchased on Ali-express and had the aluminum backs.I think the originals had copper backs .Are these sets too cheap and should I stay away from them.Any set I bought at Shop-jimmey for other tv's had copper backs like the originals and,I assume they may be of better quality and perhaps last a few years .So if anyone has any thoughts on this please share.Backlight sets for me are about 1/3 the... -
Re: LG uk6500 LEDs Turn on but no image.
When you do get back to checking the caps and if you have same cap shorting you will find that caps C102 -C108 will all show shorts.Disconnecting board L2 from L1 will show you its none of the caps on L2 as those shorts will no longer be there (assuming its C102 )....Leave a comment:
-
Re: LG uk6500 LEDs Turn on but no image.
Yes your right .I did actually remove it right after I removed 2 others but there was a lag between removing 106 and the other 3. I didn't remove that chip as its reading was due to to C102.You were dead on.Thanks again....Leave a comment:
-
Re: LG uk6500 LEDs Turn on but no image.
Tv working now .C102 was shorted. I removed it and now have picture back.Many thanks for your assistance and guidance in cracking this one.Thanks to everyone else who also contributed to solving this problem.Every piece of advice certainly helps....Leave a comment:
-
Re: LG uk6500 LEDs Turn on but no image.
Problem solved .Now have picture.Shorted ceramic cap on panel board L1 C102....Leave a comment:
-
Re: LG uk6500 LEDs Turn on but no image.
I have found that there is a half dozen caps reading short on the L1 and L2 panel boards.When I disconnect L2 from L1 all 3 L2 shorts on 3 caps disappear.Panel boards on right side R1,R2 don't show any caps shorting.L1 panel board shows 3 shorted caps so the problem appears to be in that area..
There is an 8 pin ic on L1 and also R1 that I believe are identical .Pin 6,8 are shorted on L1 panelboard however on R1 panel board pin 6,8 are not shorted.
Trying to find info on that 8 pin ic but no luck yet.It is marked...Leave a comment:
-
Re: LG uk6500 LEDs Turn on but no image.
Tv powered on
VCOM 0.0 V
AVDD 0.0 V
HAVDD 0.0 V
DVDD1VBS 1.7 V
VTERM 1.2 V,1.0 V, 1.0 V, .9 V .(L1,L2,R1,R2 boards resp.)
LOCKOUT Voltages all 1.7 V...Leave a comment:
-
Re: LG uk6500 LEDs Turn on but no image.
I removed C106 and measured the pads and both pads shorted both ways same as with capacitor so I assume cap is fine.(after desoldering it it fell to floor and yet to be located).C102 I havent removed yet and will soon ....Leave a comment:
-
Re: LG uk6500 LEDs Turn on but no image.
C102 and C106 as marked by the red arrows both read shorted in diode mode both directions.I also included some better closeups of what look to be test points on these boards....Leave a comment:
-
Re: LG uk6500 LEDs Turn on but no image.
Panel boards....Leave a comment:
-
Re: LG uk6500 LEDs Turn on but no image.
Seems to be at about the same temperature.Maybe thats normal for these boards as they don't have much of a heatsink .It also doesn't get hot right away but takes 15 or 20 minutes.Also it has the same temp.with the lvds cables plugged in or left unplugged ....Leave a comment:
-
Re: LG uk6500 LEDs Turn on but no image.
LG Model 65UK6300.Pics of the back of the tv plus front and backside of power board and main board....Leave a comment:
-
Re: LG uk6500 LEDs Turn on but no image.
Main Board just arrived today and I installed it and got the same results as with the original board.Pulling the flat cables one at a time did not give me any picture at all.I did read some voltages in the tcon section of the main board (5v,12v ) on both boards .There is a 50v cap adjacent to the flat cable labeled No.1 .I dont read any voltage there which seems odd....Leave a comment:
-
Re: Bolva s50u18
I got about 10 in. of the lcd separated then as I expected it began to crack.I had to use a fair amount of heat ,pressure just to get the lcd to begin to separate.I then also added some pure alcohol in small amounts which seemed to help a bit.
But right now it looks like game over on this pathetic Bolva which is obviously anti-consumer ,anti-repair and a total waste of resources as everyone of these will go directly to a landfill first time an led burns out.Even refurbishing the logic boards wouldn't be feasible. This tv is just like the one shot through...Leave a comment:
-
Re: LG uk6500 LEDs Turn on but no image.
I disconnected each ribbon cable ,one at a time and still no picture.The processor on the main board seems to get quite hot so I ordered another main board to do a swap.I'll report the results when it arrives.Leave a comment:
-
Bolva s50u18
Got this on the curb and tv works but backlights won't turn on.Problem is burnt out leds in backlight strips .I want to replace them but can't get screen out from housing.There is no front frame to hold screen in and it appears to be fastened with some sort of adhesive.Has anyone run into this before and if so are these screens removable....
No activity results to display
Leave a comment: