Re: Logik L40DIGB20 inverter SSI 400 14A0
After replacing the 2 tubes alone, it still didn't function properly and stay lit, but once the bad jumper joint was found, all tubes (including the 2 I'd replaced) stayed on. So the first thing I thought was "put the original tubes back in"...but it again didn't work. So I think it was both problems combined. Maybe the bad jumper caused the tubes to fail. All good now though....
Dreadnought
Member
Last Activity: 03-04-2023, 03:29 AM
Joined: 02-06-2021
Location: Nottingham
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Re: Logik L40DIGB20 inverter SSI 400 14A0
Just to let you know mate, I checked the inverter board one last time with a fine toothed comb, and found one jumper that I hadn't resoldered. I checked its track for continuity and there was none. I resoldered it and to my absolute shock...and joy of course, it works! All it turned out to be was a tiny smd jumper. Take care mate and thanks again.Leave a comment:
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Re: Logik L40DIGB20 inverter SSI 400 14A0
The board below one transformer...maybe the one leading to the tube (I'll check after work) does show slight discolouration, but the worst discolouration (light brown, not burned) is underneath an AO4614 mosfet...which leads to that particular transformer...yet is doesn't test shorted. I must admit, I've only tested the transformer's resistance in circuit to compare it to the other 3 transformers on the inverter board. Kinda quick check to make sure it wasn't OL. It reads the exact same as the other 3, so maybe wrongly assumed it was OK....Leave a comment:
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Re: Logik L40DIGB20 inverter SSI 400 14A0
Hello again mate. Changed 2 tubes. They work. Now all tubes light fully all the way across, but then they all go out again light before. Leading me to think it's def the ssi-400-14a01 inverter panel. Somethings causing the control chip on that inverter board to shut down after starting. Any ideas?...Leave a comment:
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Re: Logik L40DIGB20 inverter SSI 400 14A0
That's reassuring. I'm pretty sure I'm going to try it, because both Tvs were donated to me friends saying "can you use these for something?". I'll let you know what happens! Thanks again mate.Leave a comment:
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Re: Logik L40DIGB20 inverter SSI 400 14A0
TV with bad inverter or ccfl tube is a 40" logik L40DIGB20. It has a Samsung LTA400HA07 screen assembly with 14 ccfl tubes inside.
The donor TV is a Samsung Le40m87bdx/cry. It has a Samsung LTA400HT-L06 screen assembly which has 20 ccfl tubes inside, but these are slightly thinner, but same length of course.
After trying everything with the L40DIGB20 inverter board, (as per original post) I had the idea of trying to replace all of the ccfl tubes just on a whim, as I had the Samsung Le40m87bdx as parts, so didn't spend...Leave a comment:
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Re: Logik L40DIGB20 inverter SSI 400 14A0
Any advice I get, I'm very grateful for, so thank you. I was beginning to think it might be a tube...so I got another 40" tv that has a Samsung screen/backlight assembly/ccfl backlight...but typical of my luck, the ccfl tubes are slightly thinner!!! Do you think I'd end up blowing them if I replaced them all of the ones I'm posting about with these thinner diameter ones?
Thanks once again.Leave a comment:
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Logik L40DIGB20 inverter SSI 400 14A0
Hi. Sorry if I have posted this twice, the first thread showed an envelope with a return arrow, leading me to think I'd tried to post too soon after my introductory post. Secondly I apologise if I break any forum rules/manners, as I'm new here. I've used badcaps for advice in the past, but I've only just joined. I'm self taught, so I don't have anywhere near the knowledge that some of you guys have, but I can only hope to keep learning and get there one day.
Anyway, I've been working on a TV recently. It's the one listed in the title. Logik L40DIGB20. It powers on fine, with the standby... -
L40DIGB20 Logik 40" inverter/backlight issue.
Hi. Firstly I apologise if I break any forum unwritten rules, as I'm new here. I've used badcaps for advice in the past, but I've only just joined. I'm self taught, so I don't have anywhere near the knowledge that some of you guys have, but I can only hope to keep learning and get there one day.
Anyway, I've been working on a TV recently. It's the one listed in the title. Logik L40DIGB20. It powers on fine, with the standby light turning blue as it should. The backlight turns on for a second, then goes off. Using a flashlight, I can see an image on the screen. The power supply is fine,... -
Re: New Members - please post your introductions here
Hello everyone, I'm Pete. I'm 40...from the UK and work a manual job in the truck tyre industry. I started tinkering with electronics a couple of years ago purely out of a long fascination with how things work. I can honestly say that I wish I had found this passion when I was in my teens.
Now older, with kids, I spend every spare moment learning as much as I can...hence how I found this forum and you guys. I'm nowhere near the level of some of you guys here, as I'm all self taught, but I have a good understanding of components,...Leave a comment:
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