How to test DPS-168JP RUNTKB057WJQZ power Sharp LC-60LE600U
HTML-код
- Опубликовано: 15 сен 2024
- How to quickly bench test power supply DPS-168JP used in Sharp LC-60LE600U.
The test is not 100% reliable, but is close enough for reasons explained in the video.
Board was serviced through
www.coppelltvre...
Thanks so much! My problem was the idle power supply. I also tested at the four input piins, just to make sure the 160V was getting to the idle power supply, and tested the two output pins. Sure enough, 168V on each input pair, zero volts between the output pins. I went ahead and ordered your repair kit on Ebay, and I'm excited to put the TV back together on Monday when it gets here. Thanks again!
This is good info. I have been trying to trouble shoot the driver. it was hitting 200V DC with no load but then dropping slowly back to 2V DC
I have no power at all on the cold side. On hot side I've got 315V on pin 7/8 of the ic. Also on pin 1/4 of the transformer.
I replaced the known a6069h ic, and the resistor r7900, checked the caps around it and the zener diodes Iam out of options. Maybe transformer broken? Dps-162kp-1
Hardly the transformer. Not impossible, of course, but not likely and relatively easy to test. When transformers fail they do one of 2 things: short out (burned insulation on the copper wiring leading to short and wire shortening leading to lower resistance/higher current, which in turn lead to overload and burnout) or burn out break the circuit, which is established with a simple meter. Anything else, while always possible, is very unlikely.
Bobby, COOLMOS 02N60C3 blew on a RUNTKA958WJQZ for rail #1 of 4 LED driver. Would a shorted LED segment 1 do this or maybe just a bad MOSFET? Its the small TO-252 next to larger one on rail 1.
I have not seen this transistor fail on those boards. Anything that could cause overload could trip an avalanche current and failure so yes, it is possible that a failed LED could cause the burn. It is also entirely possible that it has failed on its own and all LEDs could be good. Sorry if it doesn't help, but it is what it is...
hi i have a sharp aquos lc-60le655u won't turn on has this similar board. i plug it in and the emblem on the bottom middle of the tv flashes for a second but the tv wont turn on. i was wondering if you had a idea of the solution? please and ty. i will in the mean time dig out my multi meter and check these
Hi, thanks for making these videos! I am not getting the stby.V (not on the pin/ not in the diode)... main fuse is ok and I get 167V out of the rectifier.... any suggestion would be appreciated. Thank you!
I am sorry, I do not have resources to help each individual request. Use the link under the video if you want us to repair your board.
Hello I have the same problem. What part(diode) number do I need to buy and replace? I looked for the part number in here but I didn't see it. Anything helps! Thank you very much.
What diode are you referring to?! This is a video on how to test the board, not how to repair it. How to repair it depends on what has gone wrong with it, if anything at all.
No standby 5v on pin 1. What need be looked?
What does it mean when the board won't power up when you short pins 14 and 15?
cuzzeyecan did you ever get your power supply back up and running? I am just trying to figure out how to test mine prior to installing the new led strings in it
Hi, i have a sharp LC-60LE650U that stopped working when my house got struck by lightning a couple weeks ago. I tested the power board using your tips and determined that the board was bad. I got a replacement power board from eBay and installed it. I checked all the voltage again and everything seems to be the same as yours except that when i press the power button, i get 7.5V instead of 12V on pin 1. The TV still doesn't turn on but the LED at the bottom on the TV has a fast flash and a slow flash.
I should mentioned that i didn't check the voltage output to the LEDs. Not sure what these should be reading. Im assuming that the power board i bought is oK since i get some lights but i get worried with the 7.5V. Could that be the main board?
Please let me know what you think. I tried the reset sequence and i still don't get anything.
Hi I have a
Click to view larger image
Move over photo to zoom
Have one to sell? Sell it yourself
DPS-168JP RUNTKB057WJQZ Power Supply for Sharp LC-60LE631M LCD TV
Put new fuse in the board and now tv not working did before as I change the fuse because the tv was flickering
So shorting pin 14 to 15 should turn on the board? Then you mention shorting to pin 16 with a momentary push button to power it up.
So same board right now with power to the board i get 5.04 volts on pin 15 only.
I am sorry, I do not remember which pins drive the board and excuse me for not taking the time to watch the video just to confirm what I say there. I try to help people when I can, but I would not normally go beyond top of my head for someone who is not a customer. The videos are free gift already. No offense meant.
Thank you very much, our dear teacher... I did not find a way out for a comment with 5 volts... I have a written way out (power tv) Do I connect it with 5 volts to take out all the efforts? I hope you will answer me
I do not understand the question. Sorry.
I just tried testing my board (APDP-153A1A) and I do not have any voltage output to the logic board... no standby 5v, no pnl_pwr voltage, nothing on any of those pins! Also, the two large capacitors are only reading 15v...nowhere near the 400v they should. Its safe to say my board is toast?
If you are measuring it right then yes, it sounds like it is bad.
@@coppelltvrepair thanks for the video, it was very helpful since I couldn't find a schematic online. I'm gonna take a chance and order a new board and see what happens.
Hi there, Thanks heaps for the effort. Quick question, I am not sure how you count the pins? I thought Pin 1 to 12 is when it's switched off and you count from pin 1 ( left) to right. While pin 13 to 24 are the same pins ( count left to right) when it's on.
I didn't understand how you considered PIN8 ( from right) as the standby one. Could you please elaborate and explain as I have watched this 10 times, but can't understand how you count the pins ( example, you have considered 1 and 2 on pin 1, and 3 on pin 2???)
George Edward K Pin number does not depend on whether board is on or off, of course. Order is determined by small digit prints on the board itself, usually giving you pins 1 and 2 at one end of the connector.
Pin meanings are also printed on the board - most often by side of pins and sometimes - sharp boards are this way - on the side; Sharp lists pins for certain meaning and I think as part of the legend they also include connector number.
Question,if want to turn on the board,ps-on jumper with bu5v,correct?
Off the top of my head sounds about right, yes.
hi i have same power supply i tested i got standby voltage5v but there is no voltage on main filter capacitor what can i do... please help me...
Well the repair service link is in the description.
If you expect me to walk you through troubleshooting your board I am afraid I do not have the resources - and frankly the will - to do that.
DOES THIS TV HAVE A BUILT IN CAMERA?
what did he say?
Hi.. im working on LC-65UE630x, 3,3volt coming from "ERROR" pin, that make all function not working, even the indicators is not working. But the other voltage (BU5v, ps on, panel on, 12v, 13v) is avaiable.. what can be the problem? Pls advice.. thanks..
Sounds like a main board problem to me. Also check the back lights.
@@coppelltvrepair yes i assume problem come from the MB, do you have recomended seller for the MB, send me the link pls.. thanks
@@bagus_reparasi_elektronik Afraid I do not. Sorry.
Would love to know what C7817 is on this board as the board I have has that component split and burnt I need to order another one of these.
RR
102K
1KV
22
LR 102K 1KV U = 1nf 1000 volt ceramic disk capacitor
Hey Bobby how do you test DPS-280LP A I have the 5v can't find PSON any help?
I don't have the board in front of me, but I think it's the rightmost one on the large connector. You can rule out the rest and it'll be the remaining one...it may have not been marked on the board indeed.
@@coppelltvrepair Thanks ! found an open smd resistor marked 60A do you know its value?
@@BATMEX44 Possibly. It is in the repair kit we sell for the board.
Otherwise just see
www.coppelltvrepair.com/t/QA-Can-you-please-tell-me-value-of-this-component
@@coppelltvrepair thanks again I am going for the kit..!
Is it just me or does this bloke sound like Bert or Ernie from Sesame Street? I might be getting mixed up with a character from The Muppet Show but he definitely sounds like someone off one of them kind of programmes 😊.....
***Edited***
I think it might be 🐸Kermit🐸 the frog that he sounds like 🐸
Great video! One thing bothers me tough: why are your probe leads switched in the multimeter? It makes me uncomfortable :)
Because at first I had the positive probe with a thin needle at the top. However checking many types of boards - e.g. plasma buffer boards or outputs of HDMI selector ICs on main boards - requires that the positive lead is set to GND and the test is made with the negative probe. Well if the positive is a needle that just kills it very fast, which is what happened. So I just flipped them and been going with those probes for at least three times as long by now :-)
Hello! need dump ic8401
Happy
translet indonesia
Hey Kermie, how's Piggy doin'?
Said to give love and hugs, sorry for abandoning you like that, but as we all know she's attracted to success :-)
Hey i would love to get my board replace by you, but i also dont want to send you a working board. Can you answer a quick question? I have done all the testing as you show in the video above, but my pin 3 power seems to be a little light under that 13v, it is high 12v, the board says it should be 13.2v and you were also getting that 13.2v. Does this indicate that board is bad and in need of repair? when i jump the pin 16, i do get 12v on my pin 1. Let me know what you think, if you think it is bad and i should send it to you for repair.
I think your board is good.
@@coppelltvrepair would there be a way to tell if it is bad but only under load. You mention something like this on your video. You said it can happen but it is rare.
Also do you repair the mainboards too or just the power supply boards.