hello i have a problem whith my lg 50pg30f-ua. the light in front stay blue the screen is black but light on the dark. i cant show the menu. i hear snow when is on by the speaker so i guess the sound is ok but i dont test more. i open the tv and no caps are bumped i test the voltage on the fuse of the zsus and its ok the 5v is ok and the other voltage is. at 198v. the control board on the center have a green led that flash 1-3-1 but dont know if it mean something. i dont know what to look for please help me
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Re: LG 50pg30
here are the picture anyone can help me please.Attached Files -
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Re: LG 50pg30
Start by checking the fuse on the y sus pcb if this is blown,
I would next check the y buffer pcb's as well,
If the fuse is open circuit, both pcb's can be faulty,
removal of the buffer ic requires skill and some special toolsComment
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Re: LG 50pg30
ok the y sus fuse is good. how can i check the y buffer just remove and check for damage or is there some voltage to check. tanks for your helpComment
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Re: LG 50pg30
if my backlight work, and i cant see the menu and i not able to play sound but only ear the no reception sound but i can raise volume is it the main board or the y-sustain ???Comment
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Re: LG 50pg30TR
Hello , Please i have this same model of LG PLASMA, it comes on i see one of the temperature light on, but no picture screen is black, the VY and VSC voltage dont look right, is about 52v. i need helpComment
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Hello, I disassembled this dead camera, and found this WTF… Two fuses soldered one above the other !
I was pretty sure nobody touched it before, but that can't be from factory. There is flux, and capacitor is probably missing.
The other weird thing : the fuses are « G » fuse : (0.75A – 8V), seems very low. The original fuse should be « O » : (32V 2,5A).
There is « O » mark beside. All fuses have the same mark letter on main board. So, I can deduce it's a « O » fuse.
And this correspond to the issus I saw : when I plug the battery, I measure the voltage dropping... -
Hi I wonder if anyone might be able to steer me in the right direction. I have this Samsung UE46ES8000 TV and it went bang during use. The main fuse on the PSU board is open. I've checked every diode/mosfet/transistor I can see and nothing appears to be short to cause the fuse to go. The DC output of the bridge rectifier is not short either. I've seen online that some of these models are known for having their PFC mosfet or other mosfets shorting and blowing the fuse but i'm not seeing that here. If anyone aware of these models having any issues to cause this? I'm reluctant to just replace the... -
Hi guys,
I'm inexperienced with electronics repairs, I've done a little bit of soldering caps and whatnot, but i have a blown fuse on this mimaki printer I got which I have bought a replacement for.
How do I remove this type of fuse (see picture)...it kinda looks like it would pull out of that bracket but it didn't come at first pull and I didn't want to brute force it incase it's soldered on there like most of the rest of the components.
Anybody know how to remove this type of fuse?
(The fuse is toward the bottom of the image labeled F2)... -
I found a project in the electronics trash yesterday. A nice Argon SA1 audio amp with some electrical issue. Took it apart and saw that the 4A250V fuse was blown so started lifting components to find the short. Eventually got to two MOSFETs (model FTA14N50C) that are shorted and when i took them out the short was gone.
Now i didn't have any replacements of the same model of course but i found a couple with pretty similar spec i thought (K10A60D & K12A50D) and put them in. Also replaced the blown fuse with a 3.5A250V one. Checked another time for short circuit and plugged it in.... -
Hi,
I recently picked up a used Matsui 175S microwave that was powering up (starts, turntable rotates) but not heating. From looking online the most likely culprit was the fuse, but unfortunately in this one the fuse had heated up and fused with the (badly designed) fuse holder and couldn't be removed. I guess this might indicate further issues beyond the fuse itself but at this stage I just want to replace the fuse and see how I go from there.
Anyway since I couldn't get out the fuse itself the easiest fix was to replace the fuse holder assembly that runs between the...
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