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vizi0n replied to Sharp LC-65N7004U / 65A6100M not powering on

in Troubleshooting TVs and Video Sources

03-20-2023, 07:01 AM
Re: Sharp LC-65N7004U / 65A6100M not powering on

In the video the strips are screwed in, but on these tvs the strips are glued with some black stuff and some tape as well. You will understand when you get there

To remove the strip i’ve juste lifted one end of the strip and pulled. Since i was not reusing I just pulled hard.

Regarding silicone, its because that is what I had on hand. Just make sure that you make it as thin as possible so that the strip lays flat. Also wait for it to cure for a few hours before lifting the tv up, just so that the...

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vizi0n replied to Sharp LC-65N7004U / 65A6100M not powering on

in Troubleshooting TVs and Video Sources

03-18-2023, 11:35 PM
Re: Sharp LC-65N7004U / 65A6100M not powering on

Hi Takaya,

You need to take the tv apart completely

This includes (but might not be limited to, as i dont remember all the steps I did) : remove back cover, remove ribbons from tcon to panel, unclip the 4 boards at the bottom on the frame, remove the outer frame, remove the locking plastic strips around lcd, remove lcd, remove plastic diffusers, remove white background, remove strips and glue new ones in place reassemble in reverse order

I have ordered a set of these from...

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vizi0n replied to Sharp LC-65N7004U / 65A6100M not powering on

in Troubleshooting TVs and Video Sources

03-06-2023, 04:03 AM
Re: Sharp LC-65N7004U / 65A6100M not powering on

Well, just an update : there was one bad LED but I ended up replacing the whole set of loght strips and everything is now back to normal operation !

Thanks for your help and suggestions

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vizi0n replied to Sharp LC-65N7004U / 65A6100M not powering on

in Troubleshooting TVs and Video Sources

01-14-2023, 11:02 AM
Re: Sharp LC-65N7004U / 65A6100M not powering on

hmmm I didn't try with half of the panel connected. I could try that later...

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vizi0n replied to Sharp LC-65N7004U / 65A6100M not powering on

in Troubleshooting TVs and Video Sources

01-06-2023, 08:40 PM
Re: Sharp LC-65N7004U / 65A6100M not powering on

Unfortunately there is no button on the TV itself, other than the power button. I've tried holding it a few seconds, or even holding while unplugged then plugging in, nothing seems to work. It feels like bad leds, but cant be overridden it seems.

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vizi0n replied to Sharp LC-65N7004U / 65A6100M not powering on

in Troubleshooting TVs and Video Sources

01-06-2023, 08:02 PM
Re: Sharp LC-65N7004U / 65A6100M not powering on

I haven't found any service manual for this model, so I don't know how to load the service menu. The TV shuts off after like 5 seconds...

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vizi0n replied to Insignia NS-50L440NA14 : Vertical lines following the picture's colors

in Troubleshooting TVs and Video Sources

01-06-2023, 01:25 PM
Re: Insignia NS-50L440NA14 : Vertical lines following the picture's colors

Since I can't seem to edit the original post, just for the sake of keeping information in one place, I will quietly revive this thread with the solution.

The solution was pretty easy : reseating the ribbon cables between the t-con and the panel.

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vizi0n started a topic Sharp LC-65N7004U / 65A6100M not powering on

in Troubleshooting TVs and Video Sources

01-06-2023, 01:22 PM
Sharp LC-65N7004U / 65A6100M not powering on

Hello Badcappers,

I have this tv that does not turn on. There are 2 model numbers on it : LC-65N7004U and 65A6100M.

When powering on the tv, the Sharp logo briefly appears with a dim S, and the tv turns off. While the Sharp logo is on the screen, the power light will blink 6 times (the last blink being very very quick).

I suspect a bad LED driver, or bad LED(s). Do you have any suggestion on how to troubleshoot this ? I have ordered a LED tester and should be getting it next week

Here is a link to a video showing what happens:
[url]https://youtube.com/shorts/hkBjgBdAios[/url]...

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Last edited by vizi0n; 01-06-2023, 01:50 PM.
vizi0n replied to Insignia NS-50L440NA14 : Vertical lines following the picture's colors

in Troubleshooting TVs and Video Sources

02-21-2017, 06:33 PM
Re: Insignia NS-50L440NA14 : Vertical lines following the picture's colors

thanks for your input everyone. I will continue investigating. But I'm very skeptical about a bad panel, as the lines would not go away every few seconds, wouldn't they?

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vizi0n replied to Insignia NS-50L440NA14 : Vertical lines following the picture's colors

in Troubleshooting TVs and Video Sources

02-21-2017, 07:11 AM
Re: Insignia NS-50L440NA14 : Vertical lines following the picture's colors

Unfortunately there are only about 15 small caps total on this tv set, really. I have checked them and they all see physically fine (not bulged at all). They are also very small compared to other tv sets I've worked on in the past. I will try to investigate further tonight....

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vizi0n replied to Insignia NS-50L440NA14 : Vertical lines following the picture's colors

in Troubleshooting TVs and Video Sources

02-20-2017, 11:59 PM
Re: Insignia NS-50L440NA14 : Vertical lines following the picture's colors

I havent done much as far as troubleshooting goes. I can say that this affects the picture on all inputs, and also affects the overlay menu.

This is all the time. Wether it is a cold power up, after being warmed up, it never changes.

I tried knocking on a few chips from different boards to see if the problem would go away but it doesnt.

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vizi0n started a topic Insignia NS-50L440NA14 : Vertical lines following the picture's colors

in Troubleshooting TVs and Video Sources

02-20-2017, 11:21 PM
Insignia NS-50L440NA14 : Vertical lines following the picture's colors

Hi,

I've bought this tv in hope for an easy fix but it seems like it is the main board (CV318H-R) that is the issue. I am wondering if anyone can help me try to figure out which part of the main board is the problem?

Thanks!

Here is a video of what it does:
[url]https://www.youtube.com/watch?v=atkX4NCd3Qs[/url]https://Hi, I've bought... 

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Last edited by vizi0n; 02-20-2017, 11:30 PM.
vizi0n replied to Maxent MX-50HPT52 has a shaky picture (video inside)

in Troubleshooting TVs and Video Sources

10-18-2016, 09:49 PM
Re: Maxent MX-50HPT52 has a shaky picture (video inside)

Better late than never, but thanks for your input/help. I have finally managed to find a spare main board last week on Ebay and received it today. Tv works like new!

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vizi0n replied to Maxent MX-50HPT52 has a shaky picture (video inside)

in Troubleshooting TVs and Video Sources

07-25-2016, 02:17 PM
Re: Maxent MX-50HPT52 has a shaky picture (video inside)

Okay thanks.

I will wait until I find one of the correct P/N. There are many B.ZRAT3C variants and this tv has the B.ZRAT3C-2 7355.

I wonder if the other ones would work as well, because they all have the same connectors (or more), and same components (or more).

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vizi0n replied to Maxent MX-50HPT52 has a shaky picture (video inside)

in Troubleshooting TVs and Video Sources

07-25-2016, 01:45 PM
Re: Maxent MX-50HPT52 has a shaky picture (video inside)

So you suggest replacing the board with the inputs? That is the mainboard, correct?

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vizi0n replied to Maxent MX-50HPT52 has a shaky picture (video inside)

in Troubleshooting TVs and Video Sources

07-24-2016, 07:15 PM
Re: Maxent MX-50HPT52 has a shaky picture (video inside)

I did all the same tests that are shown in this video. Voltages are good, but I always get the full white picture when jumping 3 and 4 (even when bypassing ps_on) I see that in the video they are actually jumping 3 and 1 so I tried that, but it boots normally.

LED2001 lights up solid while booting, then LED2002 starts flashing rather quickly and LED2001 shuts off.

Youtube video: [url]https://www.youtube.com/watch?v=5UyzvjLCABk[/url]Re: Maxent MX-50HPT52 has a shaky pi... inside) 

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vizi0n replied to Maxent MX-50HPT52 has a shaky picture (video inside)

in Troubleshooting TVs and Video Sources

07-24-2016, 03:40 PM
Re: Maxent MX-50HPT52 has a shaky picture (video inside)

With legs 3/4 shorted with a jumper and LVDS cable disconnected :

when I turn on the tv I only have a full white picture. The switch (SW2000) doesn't change the pattern on the display)

Large picture of the board available here : [url]https://spares2repair.co.uk/samsung-ps-50c7hd-lvds-lj92-01371e-a2-lj41-03703a-r1.7-50hd-v5.1-asic-logic-main[/url]Re: Maxent MX-50HPT52 has a shaky pi.../> when

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Last edited by vizi0n; 07-24-2016, 03:41 PM.
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vizi0n replied to Maxent MX-50HPT52 has a shaky picture (video inside)

in Troubleshooting TVs and Video Sources

07-24-2016, 02:55 PM
Re: Maxent MX-50HPT52 has a shaky picture (video inside)

Is the LVDS cable the one that goes to the board with all the inputs?

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vizi0n replied to Maxent MX-50HPT52 has a shaky picture (video inside)

in Troubleshooting TVs and Video Sources

07-24-2016, 02:03 PM
Re: Maxent MX-50HPT52 has a shaky picture (video inside)

The only thing I could get was a full white picture when shorting 2 of the pins. The switch on the board would not do anything while in test mode.

Is that what I should be getting?

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vizi0n replied to Maxent MX-50HPT52 has a shaky picture (video inside)

in Troubleshooting TVs and Video Sources

07-24-2016, 01:51 PM
Re: Maxent MX-50HPT52 has a shaky picture (video inside)

It is the first thing I've changed last week. It is LJ41-03703A

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Last edited by vizi0n; 07-24-2016, 01:53 PM.
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Sharp LC-65N7004U / 65A6100M not powering on

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Insignia NS-50L440NA14 : Vertical lines following the picture's colors

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