Re: phillips lcd keeps blowing fuse
I would have to pull about 50 of them out lol... shouldn't they test good mounted? or at least most of them if they're in fact good
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Re: phillips lcd keeps blowing fuse
I tested a diode at .677 And .766 then removed the leg from the board. it test it out good! 1 on one side. could there be something on the board that would cause it to read incorrectly when mounted?Leave a comment:
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Re: phillips lcd keeps blowing fuse
I will remove one of them in the morning and post back. Thank you for your help!Leave a comment:
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Re: phillips lcd keeps blowing fuse
If your getting a reading in both directions in circuit then it's going to have to be removed and rechecked out of circuit. I would say if 90% are really bad you are going to have way more time and $$ in the power supply than a working one off ebay would cost.Leave a comment:
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Re: phillips lcd keeps blowing fuse
there is no " . " on my meter so its not 5.0 but. 500 not many diodes with 1 so about 90% are bad i would think?Leave a comment:
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Re: phillips lcd keeps blowing fuse
now im confused? " suspected diodes " very few have a "1" on one end most have a reading of 5.0 to 7.0 then reverse probes 7.0 to 8.0... would this be a suspected diode? ...
ok i just used a new diode " opened a new pack of 50 " and tested you are correct Mr Bill I got .667 then reverse probes got the 1 ..so looks like i still got a bunch of bad diodes..Leave a comment:
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Re: phillips lcd keeps blowing fuse
If it's the larger diodes there could be a part number printed on it. I would desolder one leg of the suspected diodes, lift it out of the board, and then recheck to make sure it is bad.
The "1" on your meter is infinity. SO a good diode with your meter would read .450 one way and "1" with the probes reversed. The .450 is just an example it could vary depending on if there are other components on that same trace.Leave a comment:
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Re: phillips lcd keeps blowing fuse
all on board.. should i desolder one leg?Leave a comment:
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Re: phillips lcd keeps blowing fuse
2 diodes beep at both ends.. and 2 read about 5 to 6 and 0.. some go up to 19??? I have some 1n914 diodes they look about the same?Leave a comment:
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Re: phillips lcd keeps blowing fuse
Are you testing them still on the board or lift one leg off the board? To be accurate, you should at least lift one leg off the board and measure them again.Leave a comment:
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Re: phillips lcd keeps blowing fuse
got a beep both ways on one diode. it displays 0.24 on meter when it beeps. seems to be about 4 bad diodes.. read about 5 to 6 then when i change ends with the probe I get 1... i think thats 0 How do i identify the diodes so i can buy the correct ones?Leave a comment:
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Re: phillips lcd keeps blowing fuse
its good if you get beep only one way.Leave a comment:
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Re: phillips lcd keeps blowing fuse
what is the meter displaying when it beeps?Leave a comment:
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Re: phillips lcd keeps blowing fuse
ok just noticed im getting a beeb from the meter when testing some diodes???Leave a comment:
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Re: phillips lcd keeps blowing fuse
I know thats was not a diode..i was just trying to show the way i test. i was hoping i had done something wrong! lol ok i will retest again with the right setting. thanksLeave a comment:
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Re: phillips lcd keeps blowing fuse
what your testing in pic no 2 is a resistor not diode. turn your metre one more clockwise.
that is the diode mode.Leave a comment:
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Re: phillips lcd keeps blowing fuse
the meter is a Etek. the pictures show the settings and how i test.Attached FilesLeave a comment:
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Re: phillips lcd keeps blowing fuse
What brand is your multimeter, or post a picture of it. I'm thinking your doing something wrong. The meter needs to be set to diode mode. You should get a reading and when you reverse the probes you should get OL.Leave a comment:
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Re: phillips lcd keeps blowing fuse
well if I was testing correctly there's about 60 bad diodes! some were good but 95 percent were bad
I had the multimeter set on 200... best just to buy a new board?Leave a 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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