Re: phillips lcd keeps blowing fuse
Did you replace all four diodes?
Did you replace all four diodes?
-
Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search. -
Re: phillips lcd keeps blowing fuse
I just replaced the two.. but I can go ahead and replace the other 2 alsoComment
-
Re: phillips lcd keeps blowing fuse
It would be a good idea, also be very careful to get them in the same way they came out.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
-
Re: phillips lcd keeps blowing fuse
I just replace the rest still blowing a fuse. I will buy a new power board! this has been a learning experence and I want to thank everyone for helping!Comment
-
Re: phillips lcd keeps blowing fuse
I just read over this thread from start to end and all that you've tested so far was the diodes. Has anyone found a schematic on this set??? Is there a possible shorted FET? I'm sure theres a way to find the faulty component that's blowing this fuse? These problems are usually the easiest to find and cheapest to fix.The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS
Comment
-
Re: phillips lcd keeps blowing fuse
Here, I did you a little legwork. Pull the first transformer (L1501) out of the circuit and see if your short is still there by checking ohms across from fuse (both sides) to ground. Here is a schematic of this primary side of your power supply.Attached FilesThe strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS
Comment
-
-
Re: phillips lcd keeps blowing fuse
I gave up on it because the pictures are so bad they hurt my eyes- chance of spotting anything is almost zero and there are none of the backsPlease upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
-
Re: phillips lcd keeps blowing fuse
Better yet, I'll go as far as to just say, CHANGE SA1601 and SA1602. If you just pull these parts out I'll bet you that one of them is shorted.
This item is listed on the parts sheet as:
SA1601# SURGE ABSORBER 470V+-10PER
.Last edited by Dgtech; 12-14-2012, 04:59 PM.The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS
Comment
-
Re: phillips lcd keeps blowing fuse
so becasue SA1601 is on the same line as R1609 you cant test it onboard.
is this right?Comment
-
Re: phillips lcd keeps blowing fuse
I may pull these tonight or in the morning! Thank you!!Comment
-
Re: phillips lcd keeps blowing fuse
You are correct, L1601, i read wrong. Look at my notes on the schematic below.
ALWAYS CHECK OHMS WITH THE POWER OFF.Attached FilesLast edited by Dgtech; 12-15-2012, 05:00 AM.The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS
Comment
-
-
Re: phillips lcd keeps blowing fuse
Here is another way to look at it from your point of view.Attached FilesThe strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS
Comment
-
-
Re: phillips lcd keeps blowing fuse
I pulled 1601 and 1602 showing 00.2 ohms on both. did i need to test something on the board with these removed?Comment
-
Re: phillips lcd keeps blowing fuse
R1609 is 0 no reading at all on meter. tested other resistors of same type tested good. pulled C1602 dead 0 on meter. wanted to make sure i was testing the cap correct. tested on new cap. new cap test ok! so bad cap and resistor?Comment
-
Re: phillips lcd keeps blowing fuse
so i would think c1602 and r1609 is bad.
what setting did you have your meter on. 20M, 200K, 20K, 200?
and when you measured they were out of the board right. you tested in both directions?Comment
-
Re: phillips lcd keeps blowing fuse
the meter was set to 200. I measured the resistor on the board the capacitor out of the board.Comment
-
Re: phillips lcd keeps blowing fuse
200 - "horseshoe" or 200 - V?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
-
Re: phillips lcd keeps blowing fuse
horseshoeComment
-
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...
Comment