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Search: Posts Made By: newkidontheblock
Forum: Troubleshooting TVs and Video Sources 02-26-2018, 04:57 PM
Replies: 83
Views: 2,544
Posted By newkidontheblock
Re: 42LK450-UB Noob question

At school now, but I will test this when I get home. So put a positive on 1 and neg on 7? Then so on? :)
Forum: Troubleshooting TVs and Video Sources 02-26-2018, 04:54 PM
Replies: 83
Views: 2,544
Posted By newkidontheblock
Re: 42LK450-UB Noob question

I did get a new inverter board and it did not solve any problems.
Forum: Troubleshooting TVs and Video Sources 02-25-2018, 10:13 AM
Replies: 83
Views: 2,544
Posted By newkidontheblock
Re: 42LK450-UB Noob question

I doubt it helps, but when the screen was on during a previous jump, with a full white screen, I had no dark spots. But it was only on for a few seconds
Forum: Troubleshooting TVs and Video Sources 02-24-2018, 09:19 PM
Replies: 83
Views: 2,544
Posted By newkidontheblock
Forum: Troubleshooting TVs and Video Sources 02-24-2018, 07:50 PM
Replies: 83
Views: 2,544
Posted By newkidontheblock
Re: 42LK450-UB Noob question

yes all new equipment.
Forum: Troubleshooting TVs and Video Sources 02-24-2018, 04:45 PM
Replies: 83
Views: 2,544
Posted By newkidontheblock
Re: 42LK450-UB Noob question

Disconnected inverter board but I did not have any 100 ohms resistors near buy. RIP Radio Shack. I took a 1k and put it on the Error and Ground of the power supply while everything else is...
Forum: Troubleshooting TVs and Video Sources 02-23-2018, 07:33 PM
Replies: 83
Views: 2,544
Posted By newkidontheblock
Re: 42LK450-UB Noob question

with the inverter board connected as well or no?
Forum: Troubleshooting TVs and Video Sources 02-23-2018, 06:49 PM
Replies: 83
Views: 2,544
Posted By newkidontheblock
Re: 42LK450-UB Noob question

well when the inverter board was disconnected, the tv did the same thing it always did. Cycle a few times and then shut off. So, even with the inverter board disconnected it still just shuts down...
Forum: Troubleshooting TVs and Video Sources 02-23-2018, 05:27 PM
Replies: 83
Views: 2,544
Posted By newkidontheblock
Re: 42LK450-UB Noob question

So before i unplugged the inverter only, i checked to see what the tv did. The power button will pulse to blue about 3 times, then fade to red meaning the TV was off. Then, i unplugged the inverter...
Forum: Troubleshooting TVs and Video Sources 02-21-2018, 03:17 PM
Replies: 83
Views: 2,544
Posted By newkidontheblock
Re: 42LK450-UB Noob question

The only thing that was connected to the power supply while I did the test was the inverter board. The main board was dissconnected (as well as the controls like volume and what not because that was...
Forum: Troubleshooting TVs and Video Sources 02-21-2018, 03:13 PM
Replies: 83
Views: 2,544
Posted By newkidontheblock
Re: 42LK450-UB Noob question

I did try with a jumper on the A-dim and P-dim as well to see if the results change. The test yielded the same results both times.
Forum: Troubleshooting TVs and Video Sources 02-21-2018, 03:12 PM
Replies: 83
Views: 2,544
Posted By newkidontheblock
Re: 42LK450-UB Noob question

Thanks for the heads up. I was watching the video and they have the combo board. I figured I didnt even want to go down that road.
Forum: Troubleshooting TVs and Video Sources 02-21-2018, 11:24 AM
Replies: 83
Views: 2,544
Posted By newkidontheblock
Re: 42LK450-UB Noob question

Now while the screen was out, i did do the flashlight to make sure it wasnt just the light itself going out. There was no picture while the screen went off, like it legitimately just turned off and...
Forum: Troubleshooting TVs and Video Sources 02-21-2018, 09:09 AM
Replies: 83
Views: 2,544
Posted By newkidontheblock
Re: 42LK450-UB Noob question

Well like I said its only like $25, so its not the end of the world. I just wanted to be sure not to keep throwing money at it.

Now on a follow up question, you are not the first person to...
Forum: Troubleshooting TVs and Video Sources 02-20-2018, 09:36 PM
Replies: 83
Views: 2,544
Posted By newkidontheblock
Re: 42LK450-UB Noob question

Ok, sorry for the delay. I have no electronic hobby stores near me at all so i had to get resistors shipped in........

So i jumped the pins on the opposite end of the connector from the power...
Forum: Troubleshooting TVs and Video Sources 02-17-2018, 11:07 PM
Replies: 83
Views: 2,544
Posted By newkidontheblock
Re: 42LK450-UB Noob question

Ok, so i will get ahold of some 1k resistors and jump to get the backlight to come on and stay on. When i get this done, what will it tell me? Is the point of this just to test the backlight...
Forum: Troubleshooting TVs and Video Sources 02-17-2018, 07:54 PM
Replies: 83
Views: 2,544
Posted By newkidontheblock
Re: 42LK450-UB Noob question

Ok, so by voltages stay the same i meant that when the screen is on, the voltages jumped. But as the backlight went out, the voltages either dropped imediately, or progressed to zero (as in losing...
Forum: Troubleshooting TVs and Video Sources 02-17-2018, 07:04 PM
Replies: 83
Views: 2,544
Posted By newkidontheblock
Re: 42LK450-UB Noob question

Yes, I tested each fuse while the tv was going in and out. They remained at the listed numbers the entire process
Forum: Troubleshooting TVs and Video Sources 02-17-2018, 07:03 PM
Replies: 83
Views: 2,544
Posted By newkidontheblock
Re: 42LK450-UB Noob question

Testing both fuses. Both in AC and DC (because im not sure which on it would be)
In DC, both stayed below .030 both with the TV on or off

In AC, both spiked to .525, but thats it. The fuses on...
Forum: Troubleshooting TVs and Video Sources 02-17-2018, 03:31 PM
Replies: 83
Views: 2,544
Posted By newkidontheblock
Re: 42LK450-UB Noob question

Really hard to see, my guess. Part number would be
tz.6502x101 B6fy01-03

Piccs

171728

171729
Forum: Troubleshooting TVs and Video Sources 02-17-2018, 02:26 PM
Replies: 83
Views: 2,544
Posted By newkidontheblock
Re: 42LK450-UB Noob question

Attached two pictures of the inverter board

171726

171727
Forum: Troubleshooting TVs and Video Sources 02-17-2018, 02:11 PM
Replies: 83
Views: 2,544
Posted By newkidontheblock
Re: 42LK450-UB Noob question

Let me get the cover off, and ill drop one. Give me a minute
Forum: Troubleshooting TVs and Video Sources 02-17-2018, 02:07 PM
Replies: 83
Views: 2,544
Posted By newkidontheblock
Re: 42LK450-UB Noob question

What could i do to test the inverter? Its only $25, but still. I would like to be sure.
Forum: Troubleshooting TVs and Video Sources 02-17-2018, 02:04 PM
Replies: 83
Views: 2,544
Posted By newkidontheblock
Re: 42LK450-UB Noob question

Backlight inverter board
Forum: Troubleshooting TVs and Video Sources 02-17-2018, 01:46 PM
Replies: 83
Views: 2,544
Posted By newkidontheblock
Re: 42LK450-UB Noob question

I have replaced this board as well, but being as that voltage is rather high, what can I do to narrow it down?

Thanks
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