I have the above listed TV and it is blowing the fuse that is right next to the power coming in on the power board. There are 12 47uf 50v capacitors that are bulging. I suspect that is the problem but I am new at this and don't want to put power to the board after I replace them and destroy the work I have put into it. Is there something else I can do. Thanks Mark
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Successfully fixed: Sanyo 42" LCD, Sony 52" Bravia XBR9, -
Re: Insignia NS PDP50HD 09 blowing fuse
Google dim bulb tester or search here. After replacing the caps, use the bulb tester to see if there are any other shorts or problems on the PSU.
Lamp will glow bright if there is a problem but not let enough current through to damage other parts. -
Re: Insignia NS PDP50HD 09 blowing fuse
I think there might be more wrong than bulging caps. Something might be shorted in the primary circuit. Start at the bridge rectifier and work your way through diodes and fets. If something tests short, take it out or lift one leg and measure again to confirm.Comment
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Re: Insignia NS PDP50HD 09 blowing fuse
I'll look into making a dim light tester, thanks for the help. Iam going to research on how to check the bridge rectifier, diodes and fets. I'm familiar with diodes but the restis new. Thanks for some direction. MarkSuccessfully fixed: Sanyo 42" LCD, Sony 52" Bravia XBR9,Comment
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Re: Insignia NS PDP50HD 09 blowing fuse
Looks like the bridge rectifiers may be bad. I am getting readings in both directions, even when I reverse the leads on the DMV. The dc side of each rectifier is shorted. I didn't take them out of circut because I don't have a solder sucker. Would I be correct to say they are bad? If so where can I get them they are RS2505M. 2 each. Thanks MarkSuccessfully fixed: Sanyo 42" LCD, Sony 52" Bravia XBR9,Comment
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Re: Insignia NS PDP50HD 09 blowing fuse
There may be more things shorted on there, as I already mentioned in post #3. Post good high res pics and the power supply board number.Comment
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Re: Insignia NS PDP50HD 09 blowing fuse
I replaced the 12 caps and plugged it into a dim bulb tester and the power relay kept clicking on and off (bulb blinked with the relay). I had a 40 watt bulb on it. I unpluged the connectors from the power board and the one that made the relay stop clicking was the bord that has the a/v hook-ups. There is still no dc voltage. But has AC throughout the hot side. Something is shorted I'm assuming that's why the bulb was blinking. The board P/N is. LJ44-00145B. 50WF3. I'm working on pics. Thanks MarkSuccessfully fixed: Sanyo 42" LCD, Sony 52" Bravia XBR9,Comment
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Re: Insignia NS PDP50HD 09 blowing fuse
If I plug I the power board out if the tv it turns on. But has no voltage on the dc side. Can I assume it may be associated with the standby circut?Successfully fixed: Sanyo 42" LCD, Sony 52" Bravia XBR9,Comment
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Re: Insignia NS PDP50HD 09 blowing fuse
https://www.badcaps.net/forum/attach...1&d=1422928351
Pic of power supplyAttached FilesSuccessfully fixed: Sanyo 42" LCD, Sony 52" Bravia XBR9,Comment
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Re: Insignia NS PDP50HD 09 blowing fuse
Huh? Whuuuuuuuuuuuuuuuuut?
There is a dead short on the primary side with fuse blown. Nothing will work on the secondary's as long as the primary has a short. So... you got to the bridge rectifiers and checked them. So check the rest in the primary for shorts.
If you lets say just change the bridge rectifier and "missed" a shorted mosfet, the whole thing will blow again.Comment
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Good day folks......wow this new layout is weird. It's like I woke up one day and I'm no longer on Planet Earth or something
Anyway....got this here power brick from a USB to SATA adapter which keeps blowing the fuse after I almost repaired it. The reason I even bother to fix a power brick (wall wart, whatever) in the first place is because this thing was really convenient to use: I'd just plug it and that's it. It's a dual output supply, for both 12v and 5v, which although I COULD easily obtain with a DC-DC converter from a standard 12v adapter, I thought I should crack open the... -
Looking for some assistance please.
Trying to repair a PD27AOQ samsung power board.
Initially had the typical problem of cm806 capacitor blown, additionally thermistor NT801s blown.
Replaced the ceramic capacitor, str60252s, bridge rectifier, thermistor and fuse.
Testing it the fuse blows immediately power is turned on.
diodes dm852 and dm853 test as shorted when in the board but fine when removed.
any assistance, guidance would be appreciated. -
Hi all,
I am a newbie and not very experienced so bear with me if i struggle sometimes with technical language - but I'll do my best. I searched "Samsung" and the model number on the forum but didn't find anything I could understand!
I'm not an electronics guy - just picked up stuff over the years through my flight-simming hobby.
I have the above mentioned 46" tv as the monitor for my flight-sim setup. Recently it went "crack" and stopped working. No standdby light and no response. I assumed a fuse had blown and after investigation... -
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 all, so i was watching tv acreen went black and no sound. Traced problem to blown tcon fuse. Replaced and it blows replaced again samething. So my tcon fuse keeps blowing. I bought a new board havent installed yet infear its just going to keep blowing the fuse. If i only connect the right side ribbon cable the fuse doesnt blow but as soon as i connect the left cable my tcon fuse instantly blows and no picture. The right side picture works clear as day and left side picture is grey (picture attatched) im hoping its a bad tcon board itself or a cable or anything and not the panel. Thank you for...
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