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Topic:
L1 inductor value for T1000/T2000/RC5000 screens
This thread has 10 replies. Displaying all posts.
Post 1 made on Thursday January 22, 2004 at 04:14
eggz
Lurking Member
Joined:
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January 2004
2
Hi Folks,

For those with T1000/T2000/RC5000 models, one of the most common problems when your remote is dropped is for the L1 inductor to break and this causes the backlit to stop working. It happend to me a couple of weeks ago and being in Singapore, it was difficult to source for a new replacement Samsung screen. I was forced to try and replace the L1 inductor instead.

After a lot of digging around the net, finally found out that the L1 inductor is a Murata LQH4N561K04, this is a 560uH inductor with DC resistance < 14.5ohms.

Being a surface mount inductor, it is also hard to find as most suppliers would want your to buy them in the thousands.

The good news is that you can get a regular indctor from electronic shops, and solder it to where the surface mount Murata had broken off. As long as the inductance is 560uH.


eugene



Post 2 made on Thursday January 22, 2004 at 19:07
BarrryO
Lurking Member
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January 2004
4
Do you have a TS1000 or a TS2000?

Others have posted here that the part is 220uH for the TS1000; also, this value apparently does not work for the '2000.

I recently fixed my '1000 with a 220uH part I ordered from Digikey. It's not an exact replacement, and I had to enlarge the hole in the case a bit to make it work, but they will sell you one (@$0.96 each) if that's all you want. That's cheaper than ~$50 for a replacement Samsung LCD panel.
OP | Post 3 made on Thursday January 22, 2004 at 19:45
eggz
Lurking Member
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January 2004
2
Mine's actually a European model, the model number is RU890, I believe its the same as a T1000. It has the same Samsung UG-24U01-WGHT3-B LCD panel.

How I found the 560uH value was to first find the datasheet for the high voltage EL driver used for the screen, which is a Supertex HV823 (www.supertex.com)
Post 4 made on Friday January 23, 2004 at 19:27
BarrryO
Lurking Member
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January 2004
4
Yes, 560uH is the nominal value used in the test circuit (which is just the circuit they use to specify the "typical" values in the spec. sheet).

However, if you look at the application notes (AN-H33 & -H34), you'll see a range of inductor values used in different circuits. The "PDA"-type application circuit shows a 220uH L1 used.

I could measure the value of mine; it was too damaged when it broke off. But someone else did, and reported that it was 220uH. So that's what I used.
Post 5 made on Friday November 26, 2004 at 17:44
Karl Woods
Long Time Member
Joined:
Posts:
November 2004
10
I recently fixed my '1000 with a 220uH part I
ordered from Digikey. It's not an exact replacement,
and I had to enlarge the hole in the case a bit
to make it work, but they will sell you one (@$0.96
each) if that's all you want.

HELP does anyone know the part number of this i need one asap. ARRR
Post 6 made on Saturday November 27, 2004 at 13:45
Karl Woods
Long Time Member
Joined:
Posts:
November 2004
10
on supertex.com does anyone know the part number for the coil for the RC5000? i'm getting desperate now, can anyone help me? would be very greatful. Thanx. Karl
Post 7 made on Friday December 3, 2004 at 12:05
Karl Woods
Long Time Member
Joined:
Posts:
November 2004
10
Hey,
if anyone needs an inductor, i have managed to hold of 9 of them, however the are NOT SMD(surface mount) so they do need to be placed in the case very stragetically, (i cut some of my case out behind the battery, after all u cant it. lol. if anyone needs one, send me an email, 1.50 each is a fair price i think. anyway my addey is karldonteljameswoods@hotmail.com
Regards
Karl
Post 8 made on Monday December 9, 2013 at 09:09
elannut
Long Time Member
Joined:
Posts:
February 2010
285
Reviving old thread

Does anyone know where I can get a Murata induction coil. I searched all over. Do not want to buy 100 of them. As an aside is there a place where I can buy battery door for the rc5000, my old one has a broken clip.

On January 22, 2004 at 04:14, eggz said...
Hi Folks,

For those with T1000/T2000/RC5000 models, one of the most common problems when your remote is dropped is for the L1 inductor to break and this causes the backlit to stop working. It happend to me a couple of weeks ago and being in Singapore, it was difficult to source for a new replacement Samsung screen. I was forced to try and replace the L1 inductor instead.

After a lot of digging around the net, finally found out that the L1 inductor is a Murata LQH4N561K04, this is a 560uH inductor with DC resistance < 14.5ohms.

Being a surface mount inductor, it is also hard to find as most suppliers would want your to buy them in the thousands.

The good news is that you can get a regular indctor from electronic shops, and solder it to where the surface mount Murata had broken off. As long as the inductance is 560uH.

eugene
BK
Post 9 made on Tuesday December 10, 2013 at 23:53
Lyndel McGee
RC Moderator
Joined:
Posts:
August 2001
12,645
You can try www.servicewidetech.com for a door. They may or may not have one. If interested in picking up another gently used RC5000, PM me as I have one with original box, etc... I also have second TSU1000 DS and extra battery.
Lyndel McGee
Philips Pronto Addict/Beta Tester
Post 10 made on Wednesday December 11, 2013 at 08:08
elannut
Long Time Member
Joined:
Posts:
February 2010
285
Thanks: I will try there. Which I knew you had one but I already bought a second rc5000 on the bay. I was going to try to revive the original one with a new door and induction coil just for the sake of it. I really like this remote
BK
Post 11 made on Sunday December 22, 2013 at 15:59
elannut
Long Time Member
Joined:
Posts:
February 2010
285
I think this is the murata replacement part which replaces the previous one. (Murata LQH4N561K04, ) At mouser:

[Link: mouser.com]
BK


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