Author Topic: LG Side by Side  (Read 2262 times)

Offline dentdaddy

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LG Side by Side
« on: March 26, 2012, 09:17:09 AM »
I am trying to locate a glass fuse to replace the burned out fuse in my SXS. Any idea's? A new board comes with a fuse, but I don't want buy a new board.


Model #LSC26905TT
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Offline wildimaginations

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Re: LG Side by Side
« Reply #1 on: March 26, 2012, 10:03:29 AM »
The control board is located on top of the refrigerator.  Your model has a replaceable fuse and you don't have to order the whole board.  Open the cover and the fuse is located on the refrigerator side of the board towards the rear.  Replace the fuse with a slow blow type fuse and you should be good to go.

Hope this helps.
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Offline JWWebster

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Re: LG Side by Side
« Reply #2 on: March 26, 2012, 12:55:51 PM »
Wild can you give a stock number for your slow blow fuse? Where might these fuses be found? Radio Shack?
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Offline wildimaginations

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Re: LG Side by Side
« Reply #3 on: March 26, 2012, 07:14:07 PM »
I don't have a stock number.  I use a 15a microwave slow blow fuse to replace the original glass fuse.  Never had a problem after that.
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Offline JWWebster

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Re: LG Side by Side
« Reply #4 on: March 27, 2012, 06:24:00 AM »
Cool
May the hinges of our friendship
        never grow rusty.

About the icons: The beer is tip link, if a tech saves ya some money buy em a 6 pack. The small green square=personal message. The green dot is a link to my web page on appliance repair and other general BS I love to post. The letter sends me email.
I love fan letters! LOL

Offline dentdaddy

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Re: LG Side by Side
« Reply #5 on: March 27, 2012, 07:51:49 AM »
Thanks, Wild.
 
The fuse is a 250volt 15amp fuse. The guys at Autozone looked at me like I was an idiot when I asked for one. Where can I get this fuse?
Good work isn't cheap. Cheap work isn't good.
SW Oklahoma

Online AJ

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Re: LG Side by Side
« Reply #6 on: March 27, 2012, 08:15:06 AM »
http://www.repairclinic.com/Microwave-Fuse-Thermal-Fuse-Or-Breaker-Parts



Line Fuse 14QBP20CSB Order now for same day shipping. 365 day return policy. RepairClinic.com


Hope you find our site helpful.

Offline RegUS_PatOff

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Re: LG Side by Side
« Reply #7 on: March 27, 2012, 10:52:23 AM »
OR Radio Shack
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Online AJ

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Re: LG Side by Side
« Reply #8 on: March 27, 2012, 10:54:06 AM »
Hope you find our site helpful.

Offline dentdaddy

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Re: LG Side by Side
« Reply #9 on: March 29, 2012, 07:58:51 AM »
Boo Yah! Fixed it with a microwave fuse...$1.41!

Thanks fella's!!!!!!!!
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SW Oklahoma

Offline ApplianceGuru

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Re: LG Side by Side
« Reply #10 on: March 29, 2012, 02:10:44 PM »
A fuse should never blow. . . period.  A fuse is a safety device that blows FIRST before a more expensive component blows.  Something failed, and caused the fuse to blow.

The fuses that are soldered in are fuses that let you know there has been a failure in the relay system.  If that fuse blows, then it means more relays were closed than were supposed to be closed.  In some cases, this can feed voltage to parts of the circuit that shouldn't be getting voltage at the specific time.

Basically, if the fuse is soldered in, and it is blown, replacing it will probably result in another blown fuse.
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Offline Ol' Lonely

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Re: LG Side by Side
« Reply #11 on: March 29, 2012, 02:45:27 PM »
Are you guys talking about the fuse on this board?

Main Control Board Part # 6871JB1410D


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Offline PARTech

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Re: LG Side by Side
« Reply #12 on: March 29, 2012, 03:22:59 PM »
Or you can see several right after a power outage from the spike when they cut it back on..... Notorious up here with the power companies. :)
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Offline haroldsappliance

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Re: LG Side by Side
« Reply #13 on: March 29, 2012, 05:03:23 PM »
Never had a call back on this fuse replacement.

Offline ApplianceGuru

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Re: LG Side by Side
« Reply #14 on: March 29, 2012, 07:02:40 PM »
I had a big long explanation for how and why a fuse should not blow, even in voltage spike situations, but when I hit "Post" ApplianceJunk took too long to respond and I lost it all!

In short, the varactor should short any voltage spikes to neutral, saving all the other components on the board from being exposed to anything over 120V AC (RMS).  The fuses are also protected.

The LG refrigerator board has a varactor, and two fuses.  The fuse that is soldered blows during board failure.  If the replaceable fuse blows due to voltage spike, this means the voltage protection circuit on the board is failing, and you should replace the board.  This also means some components were briefly exposed to a higher voltage, which has weakened them.

A varactor can absorb high voltage spikes, but each spike reduces it's ability to absorb future spikes.  If a fuse is blowing due to voltage spikes, then it means the board is failing.

The only way to know if a voltage spike has occurred is to look at past voltage data, which nobody has access to.  If a serious voltage spike has occurred, then you will always see a blown varactor.  This means the rest of the board is fried also.

There is a reason the manufacturers tell you to replace the board if the soldered fuse blows.  I know they never explain why, and it is probably because they want you to buy the whole board from them, instead of replacing board components.  My guess is they encourage buying the whole board because too often you can spend weeks trying to narrow down the root of circuit board failures, and it takes some pricey equipment to capture the failure.  (digital analyzers, oscilloscopes, data loggers, etc....)

I used to work on flight simulators, and we had test equipment that got up to tens of thousands of dollars per piece.  A few years after I left, the company spent $70,000 on a top of the line digital analyzer.  This can be justified when you are working on hundreds of flight simulators worth a few million each, but in the appliance world. . . . . . . not even on a $25,000 AGA range.
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