TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

[budm]

Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

So where is the follow-up?

[nomoresonys]

Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

Yes indeed.

[koolx]

Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

Figured it would be because you said they were old, there are 2 suggestions there, the other is just look at the back cover without removing and see if there is a service code number, other than that, I don't know.

Hi nomoresonys.. when you say to "look at the back cover without removing" do you mean the stickers on the back of the tv that contain info like serial number?

[nomoresonys]

Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

Figured it would be because you said they were old, there are 2 suggestions there, the other is just look at the back cover without removing and see if there is a service code number, other than that, I don't know.

[koolx]

Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

Well I was referring to the panel sticker info, which is on the back metal chassis of tv on a sticker, you need to take the back cover off to access it, guess you could see if there is a service code number on the back cover, might start with srv code or sum such.

Thats too much work for the person who owns that tv.

[nomoresonys]

Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

Well I was referring to the panel sticker info, which is on the back metal chassis of tv on a sticker, you need to take the back cover off to access it, guess you could see if there is a service code number on the back cover, might start with srv code or sum such.

[koolx]

Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

Hi budman. I will get those readings out to you. I ran into an unexpected snag today. All I ask is just a little bit more patience. Thank you budman.

[budm]

Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

I'm waiting for your test result in my post #20.
Did you read it and understand it?
Did you verify that the meter is good for sure at this point?

[nomoresonys]

Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

If you got a meter working properly, try the tests in post #20, they're pretty simple, the test is on the cold side of powerboard, the HOT/PRIMARY side is the side with the DEADLY VOLTAGES and you MUST be very careful when working in that area, number 2 below shows a video tutorial.

[koolx]

Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

Probably a pretty good tv you have there, probably just a matter of what's wrong with it, which may be found with proper testing but it's work and not always easy if inexperienced with electronics.

Hi nomoresonys. I hear ya. I'm experienced with replacing parts on laptops and I built my own custom PC if that qualifies me for a "techie." Not completely inexperienced by those standards. It does seem like an easy fix just a matter of dialing in on what part should be replaced.

The tv itself is enticing me to keep it to fix it. The only drivers keeping me from embracing it fully are the viewing angle which gets cloudy and the low brightness level. I want a bright tv not one where I have to struggle to make out images. But if you think these factors are mitigating let me know.

Looks like budman is busy working today. Hope he reads this today and get his input.

.

.

[nomoresonys]

Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

Probably a pretty good tv you have there, probably just a matter of what's wrong with it, which may be found with proper testing but it's work and not always easy if inexperienced with electronics.

[koolx]

Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

Someone wants to buy this tv from me for $90. Do you guys think its worth that I should sell it or try to fix it?

[koolx]

Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

Check the sticker numbers on the panel/back chassis see if they match.

The person from whom I want to buy the tv is too weak to bring the tv down from its wall mount. So she cant read off the stickers from the back of the tv. Is there another way to do that?

[nomoresonys]

Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

Check the sticker numbers on the panel/back chassis see if they match.

[koolx]

Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

Hey bud.. and to the rest of the guys. I found a TCL tv (TCL 55R625) with broken screen with same size screen (55") but different model. Is it possible to take the display from my TCL 55S405 and replace the broken one in the TCL 55R625? Will it fit??

[koolx]

Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

Hello to all you guys and bud. So I went out to buy batteries for my multimeter. The store that carries it is closed today sunday but will open tomorrow. Tomorrow I will buy them when they open and will begin testing! Excuse the delay and appreciate all your patience.

[neilc6]

Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

Budm is trying to guide you into a procedure of checking the voltages to the LED strips before the delicate and risky task of removing the panel.

Flash of backlights on power up is a symptom of bad backlights and the protection circuit shutting them down. If you remove the panel and record the flash and go frame by frame, you should be able to see with ones are out. Better to replace them all with new to prevent future problems.

[Diah]

Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

80th years ago i had faced this isuue when i visted friends at his old house with 2 stage. at the top stage was the outlet read funny.. inspect his bathroom and i did found like heater with cabling hidden inside the wall.. be careful and take budum advice first to be safe you and yours families member

[nomoresonys]

Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

Pretty simple to check for accuracy, just take a battery from something that you have relatively fresh batteries in, like a remote control maybe and check voltage, looking for about 1.5 volts.

[koolx]

Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

What I am saying is that you are told that the meter is good 'He assures me the tool is working correctly' but when you take the readings and the meter only shows 79V, then if I am the supe I would have great doubt that the meter is good by looking at the lights and appliance in your house, that would have giving the clue that the meter is wrong. How did the supe figure out that the meter is working correctly?
Surge protector is not safety device for preventing you from being electrocuted, it is for protecting the connected equipment.
Did you look all the outlets in your house to see if there is GFCI outlet in your house some where, my house is built in 1986 and required to have GFCI for both of my bath room and the kitchen, I do not know how old your house is

When the super handed me the multimeter he said I should swap out the batteries if I encounter poor performance with emphasis to switch it off when not in use. Although the digital read doesnt seem to be fading as an indicator of poor battery, I'm not taking any chances. Most of my house's outlets were checked. I even tested it at my neighbors. Same result. Henceforth I am stamping it as defective.

Regarding GFCI, my apartment building was built all the back in 1906 known as a pre-war building. About 18 years ago the bathroom outlet had trouble and was replaced by the super. I really dont think its GFCI capable but will ask the super if it is nonetheless to be sure.

Will test with the other multimeter tomorrow when i land fresh batteries. Thanks bud!