Re: Sharp LC-42D62U Inverter board
Man you won't believe this.
I haven't touched the tv in a few days, powered on the tv and left it on for a few minutes, then powered it off.
When I turned it back on I no longer got 2 seconds to black.
I checked the white fuses 5a/160v and one side does not read 24v.
I think that arcing is definitely popping the fuse.
I think it's time to part out this tv and try to fix another display.
Thanks everyone for all your input.
Announcement
Collapse
No announcement yet.
User Profile
Collapse
-
Re: Sharp LC-42D62U Inverter board
Shoot. I'm stumped on what to do.
Leave a comment:
-
Re: Sharp LC-42D62U Inverter board
Think I can avoid that one lamp by soldering a jumper wire on 2 points on the transformer and removing the transformer completely?
Leave a comment:
-
Re: Sharp LC-42D62U Inverter board
I don't see any damage to the connector though. Should I see any indications of damage on the connector?...
Leave a comment:
-
Re: Sharp LC-42D62U Inverter board
When you say wire connector, did you replace the tip or did you replace the wire and the tip?
Where would I find a replacement tip /connector from?
Leave a comment:
-
Re: Sharp LC-42D62U Inverter board
It is a sharp tv not sure on the panel yet.
I'll have to open the front up tomorrow after work to see.
The sm lists that part # for the lcd
Leave a comment:
-
Re: Sharp LC-42D62U Inverter board
The service manual lists the lcd as r1lk420d3lf21
Leave a comment:
-
Re: Sharp LC-42D62U Inverter board
Points 1 and 2 have the same readings
When the screen is on it reads 12v
When it goes black, it reads. 03
Leave a comment:
-
Re: Sharp LC-42D62U Inverter board
What would you suggest to be the next thing to troubleshoot on the inverter?
II have a whole new respect for people in the electrical field.
I work in IT and man this is such a learning curve.
It's very intriguing though.
Leave a comment:
-
Re: Sharp LC-42D62U Inverter board
Here's the thing, I no longer get 24 volt reading on the test point in the pic I attached above.
Thinking it was a bad solder job, I removed the fuse and tested the test point and received 24volts
Resolder the fuse and got. 03 volt on the test point.
So there is a line of caps going down the center and one side when you take readings is 24 v the other side is. 03
Is there something faulty going on which is causing the voltage to go from 24 to 03v as soon as it crossed the line of caps?
Leave a comment:
-
Re: Sharp LC-42D62U Inverter board
Right next to c326 and below it.
Prior the to the fuse install, it read 24v
Think I might have a cold solder on the fuse?
Leave a comment:
-
-
Re: Sharp LC-42D62U Inverter board
I did buy a new slave inverter originally due to the burnt mark i saw. It does it with both the new and old slave inverter.
Can I clean the connectors using rubbing alcohol?
Also what could explain the. 03 voltage reading I am getting now?
Prior the the fuse install it was getting 24 volts
Leave a comment:
-
Re: Sharp LC-42D62U Inverter board
Also, when I take the reading of the rest point on the inverter when powering on the tv it reads 12 v then goes to. . 03 volts.
Leave a comment:
-
Re: Sharp LC-42D62U Inverter board
So i replaced the fuse and the fuse gets 24v on both sides. I tested the 2 white fuses below and they are getting 24 volts as well.
II am now getting 2 seconds to black.
When I test the voltage on the test points near the transformer, it reads. 03 volts.
The slave board acts the same way as the master.
I'm banging my head on the wall now lol.
Please help
Leave a comment:
-
Re: Sharp LC-42D62U Inverter board
Thanks everyone for all the helpful information.
Leave a comment:
-
Re: Sharp LC-42D62U Inverter board
Ahh, okay. So the wattage used depends on the mass of the object you are working on.
If I buy an adjustable 60 watt iron, and am bout to solder the fuse I should lower the wattage to around 25-30
Leave a comment:
-
Re: Sharp LC-42D62U Inverter board
Ok good to know. I was looking to buy a 60 watt iron possibly one that is adjustable.
If yiu go too high on the wattage, could it damage the board?
Leave a comment:
-
Re: Sharp LC-42D62U Inverter board
What wattage soldering iron should I use on the tv boards?
I used to solder mod chips on game systems a years ago,but don't remember what wattage iron should be used.
I'm going to be buying a new iron and wanted to know what kind to get. Are adjustable irons any good?
Leave a comment:
-
Re: Sharp LC-42D62U Inverter board
Great!
I'm going to order this and see how everything plays out after replacing it.
I'll post an update once it's installed.
Leave a comment:
No activity results to display
Show More
Leave a comment: