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Old 03-21-2017, 07:14 AM   #1
tjmethod
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Default VoItage regulators MP2301ENE-LF-Z

Hello wondering if anyone has a line on any IC components, I am looking for some voltafe regulators made by Monolyithic Power Systems - MP2301ENE-LF-Z, I've searched the web , zdigi key, mouser, farnell you name it but cant find any one source where I can buy some or if anyone knows a cross reference to another match to it
Thanks
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Old 03-21-2017, 07:20 AM   #2
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Default Re: VoItage regulators MP2301ENE-LF-Z

Available from Mouser
http://eu.mouser.com/Search/Refine.aspx?Keyword=MP2301

Edit.
I now see, not available, sorry
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Last edited by dick_barton; 03-21-2017 at 07:23 AM..
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Old 03-21-2017, 08:36 AM   #3
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Default Re: VoItage regulators MP2301ENE-LF-Z

Its extremely hard to find em. I tried couple of months ago, finally i found used PCB with that chip and it worked, so try to find similar board.
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Old 03-21-2017, 01:03 PM   #4
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Default Re: VoItage regulators MP2301ENE-LF-Z

Mouser says call for quote so may be able to order. Probably quantity. But if not to bad resell on remaining on ebay
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Old 03-21-2017, 01:54 PM   #5
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Default Re: VoItage regulators MP2301ENE-LF-Z

Is the old one bad? no switching, no output?
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Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956

Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999

Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl

Tear down pictures : Hit the ">" Show Albums and stories" on the left side
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TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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Old 03-22-2017, 06:51 AM   #6
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Default Re: VoItage regulators MP2301ENE-LF-Z

This is the LC60LE600U thats dead in another thread. You had determined from the voltages:

"Pin 16 PNL_POW = 0.05V = No command to turn on PNL12V for running the T-CON
Pin 24 STB (Von) = 0.58V = No BL-ON to turn on backlights circuit

No dimming control:
Pin 17 PWM1 = 0.16V
Pin 19 DIMMER = -0.00V

The key is this one which I do not what it should be for normal operation:
Pin 22 ERROR = 0.95V"

You had figured since the standby power supply was present, that the main board is dead.

I bought a ps from a company online which showed up cracked so I need another ps and bought a programmed eeprom off ebay. I had also ran this buy Shawn 'freakaftr8' and his take on the main was

"Essentially What's Happening Here is the standby voltage is being sent to the main board but the main board is not doing anything with the voltage as most likely dead ee prom or voltage regulators. In this case you will never get 12 volt or panel on or backlight on. I think with this particular setup you're getting voltage at PS on and I think that needs to be grounded"

This main is really hard to find- one or 2 popped up on ebay high priced but no info on what it came out of.

Do you know where I can find this IC or compatable ones? I believe there are 3 I need. The main board-Sharp DUNTKKF905FM04 (KF905, QPWBXF905WJZZ

Thanks-
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Old 03-22-2017, 07:46 AM   #7
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Default Re: VoItage regulators MP2301ENE-LF-Z

WoW, You fix it..... amazing............"finally i found used PCB with that chip and it worked."

MP2301ENE-LF-Z Aliexpress has it, Would you please give me the part location number?

---------------------------------------------------------------------------------------------------------------------
Learning spanish for TSLA. .............. Aprender español para TSLA.

You fix it. : Lo arreglas. amazing : asombroso
You repair it. : Lo reparas.
You test it. : Lo prueba.
You check it. : Lo compruebas.
Attached Images
File Type: png Screenshot-19.png (409.6 KB, 28 views)
File Type: png Screenshot-14.png (373.2 KB, 22 views)
File Type: png Screenshot-22.png (83.6 KB, 28 views)
File Type: png Screenshot-21.png (69.7 KB, 18 views)

Last edited by capwizard; 03-22-2017 at 08:13 AM..
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Old 03-22-2017, 11:22 AM   #8
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Default Re: VoItage regulators MP2301ENE-LF-Z

capwizard what is your native language anyway? I was thinking Spanish was your native language.
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Old 03-22-2017, 01:53 PM   #9
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Default Re: VoItage regulators MP2301ENE-LF-Z

Quote:
Originally Posted by tjmethod View Post
This is the LC60LE600U thats dead in another thread. You had determined from the voltages:

"Pin 16 PNL_POW = 0.05V = No command to turn on PNL12V for running the T-CON
Pin 24 STB (Von) = 0.58V = No BL-ON to turn on backlights circuit

No dimming control:
Pin 17 PWM1 = 0.16V
Pin 19 DIMMER = -0.00V

The key is this one which I do not what it should be for normal operation:
Pin 22 ERROR = 0.95V"

You had figured since the standby power supply was present, that the main board is dead.

I bought a ps from a company online which showed up cracked so I need another ps and bought a programmed eeprom off ebay. I had also ran this buy Shawn 'freakaftr8' and his take on the main was

"Essentially What's Happening Here is the standby voltage is being sent to the main board but the main board is not doing anything with the voltage as most likely dead ee prom or voltage regulators. In this case you will never get 12 volt or panel on or backlight on. I think with this particular setup you're getting voltage at PS on and I think that needs to be grounded"

This main is really hard to find- one or 2 popped up on ebay high priced but no info on what it came out of.

Do you know where I can find this IC or compatable ones? I believe there are 3 I need. The main board-Sharp DUNTKKF905FM04 (KF905, QPWBXF905WJZZ

Thanks-
I would check to see if those 3 ICs are functioning or not first.
It has the same pinout as MP2303 series.
http://www.monolithicpower.com/Produ...erters/MP2303A
Attached Files
File Type: pdf MP2303A_r1.1.pdf (436.0 KB, 16 views)
File Type: pdf MP2303.pdf (348.8 KB, 11 views)

Last edited by budm; 03-22-2017 at 01:58 PM..
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Old 03-22-2017, 02:06 PM   #10
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Default Re: VoItage regulators MP2301ENE-LF-Z

I am a Chicano.

It's hard to believe this part (MP2301ENE) will damage?
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Old 03-22-2017, 02:08 PM   #11
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Default Re: VoItage regulators MP2301ENE-LF-Z

That is why they better be checked first before causing more problem due to removal and installation of the new parts. We have the pinout of the IC to do the testing.
OP needs to find out:

1) Visual check, resistance check (Input, Output), etc.
2) Does it have Input Voltage?
3) Does it have EN (ENABLE) command signal to turn on the IC or not?
4) Does it have Output Voltage with the present of the above Voltage and Command signal?

Last edited by budm; 03-22-2017 at 03:22 PM..
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Old 03-22-2017, 05:29 PM   #12
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Default Re: VoItage regulators MP2301ENE-LF-Z

Hey there capwizard, the locations are 9602, 9603 and 9604
Sharp DKEYMF905FM04 Main Board For LC-60LE600U
Great you found them- I actually got a return email from the rep from the northeast with Monolithic Power Systems and he's going to just send me three of them.
Attached Images
File Type: jpg Sharp main top left 2nd.jpg (194.9 KB, 20 views)
File Type: jpg Sharp main center of the board.jpg (273.6 KB, 19 views)
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Old 03-22-2017, 06:30 PM   #13
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Default Re: VoItage regulators MP2301ENE-LF-Z

Thank you for the details pictures, I bet yu it is not the IC 9602, IC 9603 and IC 9604 are causing the problems, If it is the case, it would be the (Badcaps), it will be nearby the ICs and just one SMD cap has problem.

"Essentially What's Happening Here is the standby voltage is being sent to the main board but the main board is not doing anything with the voltage as most likely dead ee prom or voltage regulators. In this case you will never get 12 volt or panel on or backlight on.

Your TV problem is just need to reset it.( After you change egde LED if one of led not work, or you fix the power or main PCB).

-------------------------------------------------------------------------------------------------------------------------------
From my experience working on two Sharp LED TV's (model lc60c6400u) that had the one long flash and two short flashes, both cases involved a poor or disconnected solder joint on the connector attached to the LED light strip. I redid the solder on both connectors just to be safe and both TV's are working great.

I did the Vol down, channel up and power trick to start it, and noticed only the right side of the screen had back lighting. I then confirmed the whole strip was out once I removed all the layers of the screen. I then looked for bad led lights on the strip and all were fine, and also test the voltage at the power supply which tested fine as well. lead me to the connector or wires as the culprit. Of course the wires tested fine, but when I looked at the connector, I noticed the solder at 3 points on the connector had cracked.
-----------------------------------------------------------------------------------------------------------------------------

PS: This Sharp TV (If LED has bad connection) by reset it, Will works.

Conclusion: Not knowing the TV at shutdown mode, as a module Tech am I , I ordered the all boards still not fix the TV. I am hoping someone does not make the same mistake like I did. After this lesson, I've fixed more than 10 of them.

http://www.badcaps.net/forum/showthread.php?t=58916

Last edited by capwizard; 03-22-2017 at 07:14 PM..
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Old 03-22-2017, 09:34 PM   #14
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Default Re: VoItage regulators MP2301ENE-LF-Z

Quote:
Originally Posted by budm View Post
I would check to see if those 3 ICs are functioning or not first.
It has the same pinout as MP2303 series.
http://www.monolithicpower.com/Produ...erters/MP2303A
I'm waiting for another ps, I had bought the repair kit from shopjimmy and replaced eveything without issue although the numbers on little IC didnt match the one that it replaced. When plugging in and testing voltages, I thought I saw two flashes, then I see a flame coming out of the ferrite bead in the middle of the board as if it were a bic lighter. I then hear a pop like a popcorn kernel before getting it unplugged. I then ordered a ps from a company that showed up with the corner broken and crack in it so I cant test anything until I get a ps
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Old 03-22-2017, 09:53 PM   #15
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Default Re: VoItage regulators MP2301ENE-LF-Z

Quote:
Originally Posted by capwizard View Post
Thank you for the details pictures, I bet yu it is not the IC 9602, IC 9603 and IC 9604 are causing the problems, If it is the case, it would be the (Badcaps), it will be nearby the ICs and just one SMD cap has problem.

"Essentially What's Happening Here is the standby voltage is being sent to the main board but the main board is not doing anything with the voltage as most likely dead ee prom or voltage regulators. In this case you will never get 12 volt or panel on or backlight on.

Your TV problem is just need to reset it.( After you change egde LED if one of led not work, or you fix the power or main PCB).

-------------------------------------------------------------------------------------------------------------------------------
From my experience working on two Sharp LED TV's (model lc60c6400u) that had the one long flash and two short flashes, both cases involved a poor or disconnected solder joint on the connector attached to the LED light strip. I redid the solder on both connectors just to be safe and both TV's are working great.

I did the Vol down, channel up and power trick to start it, and noticed only the right side of the screen had back lighting. I then confirmed the whole strip was out once I removed all the layers of the screen. I then looked for bad led lights on the strip and all were fine, and also test the voltage at the power supply which tested fine as well. lead me to the connector or wires as the culprit. Of course the wires tested fine, but when I looked at the connector, I noticed the solder at 3 points on the connector had cracked.
-----------------------------------------------------------------------------------------------------------------------------

PS: This Sharp TV (If LED has bad connection) by reset it, Will works.

Conclusion: Not knowing the TV at shutdown mode, as a module Tech am I , I ordered the all boards still not fix the TV. I am hoping someone does not make the same mistake like I did. After this lesson, I've fixed more than 10 of them.

http://www.badcaps.net/forum/showthread.php?t=58916

cap we found voltages that were too low causing not enough to turn on the backlight circuit, t-con or dimming control, even though theres standby power, the ps is the first problem and the fact that theres no button combination, power, vol up or down that will show any sign of life on this set means there is an issue on the main and from what I'm told its theeeprom or voltager regulators or combination of them both
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Old 03-23-2017, 09:04 AM   #16
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Default Re: VoItage regulators MP2301ENE-LF-Z

My bad, I didn't see your Post here. http://www.badcaps.net/forum/showthread.php?t=60015

You're gonna put in is this one?
Sharp RUNTKB057WJQZ (DPS-168JP A) Power Supply Repair Kit LC-60LE600U
Attached Images
File Type: jpg shopjimmy-runtkb057wjqz_repair_kit-top.jpg (225.3 KB, 14 views)
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Old 03-23-2017, 02:10 PM   #17
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Default Re: VoItage regulators MP2301ENE-LF-Z

I actually did- replaced them all then went to check the voltages and saw 2 quick flashes and all the sudden I see a flame like a cigarette lighter coming fro the middle of the board- it was from a ferrite bead. as I was there was a pop before I got it unplugged. The only odd thing was that the number on the really small IC didnt match the number on the one I desoldered. Then I order a board from a company and it arrives broken so I think theyre sending me a another...
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Old 09-20-2017, 06:59 AM   #18
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Default Re: VoItage regulators MP2301ENE-LF-Z

TJMETHOD,Did you ever get this LC60LE600U sorted out?a friend gave me the exact same tv doing the same exact thing.no signs of power,service mode button combos dont work.basically same thing you have.i did check power supply awhile back looked good,but im gonna double check them with what you have.
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