LCD Temp Sensor broken on Logic board

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iMac Intel 27インチ EMC 2390

モデル番号A1312 / Mid 2010 / 3.2 GHz Core i3もしくは2.8 & 3.6 GHz Core i5もしくは2.93 GHz Core i7, ID iMac11,3

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Faisal Gondal @faisalgondal

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投稿日: 2020年12月20日

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LCD Temp Sensor broken on Logic board

Hi

My LCD temp sensor on the logic board snapped off. The pads on the board are not intact so will not allow the wires to be soldered. Ive heard there is a way to override the temp sensor by running the temp sensor wire to some other place on logic board (could be a load of BS) but I thought I'd check with the experts here to see if anyone has had this issue and resolved.

Obviously I can replace the logic board but I want to try and fix this if I can as it's another project machine.

Thanks

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@faisalgondal any chance you can post a better picture? This one is to blurry and difficult to check.

Yes it can be done but we need to see a better picture to mark the jumper way for you.

oldturkey03 さんによる2020年12月20日

Hi

Another pic added.

Faisal Gondal さんによる2020年12月20日

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oldturkey03 @oldturkey03

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投稿日: 2020年12月20日

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@faisalgondal according to the schematic

this should work for your sensor connection

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Thanks @oldturkey03

I'm guessing I take the connector side off the LCD temp sensor cable and solder onto the points shown?

Faisal Gondal さんによる2020年12月20日

@faisalgondal yes you could give that a try.

oldturkey03 さんによる2020年12月20日

Thanks. I have 2 wires coming out of the LCD temp sensor, black and grey. The Black would go to the blue line according to your diagram, and grey to the green line. What do I connect to ground? Thanks

Faisal Gondal さんによる2020年12月21日

@faisalgondal - You also lost the inductor L5521 as well. I would recommend you leave the connectors active. Instead solder on wire leads to the socket pins and then solder the leads to the points OT pointed you to. You will need to solder the indictor inline with the lead that needs it.

Dan さんによる2020年12月21日

Thanks Dan. Yes L5521 is lost too.

So with the sensor cable, I stick the new sensor on the LCD the other side expose the black and grey wires and solder to points shown by OT? And nothing else?

Thanks both

Faisal Gondal さんによる2020年12月21日

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@faisalgondal any chance you can post a better picture? This one is to blurry and difficult to check.

Yes it can be done but we need to see a better picture to mark the jumper way for you. — oldturkey03
Thanks @oldturkey03

I'm guessing I take the connector side off the LCD temp sensor cable and solder onto the points shown? — Faisal Gondal
Thanks. I have 2 wires coming out of the LCD temp sensor, black and grey. The Black would go to the blue line according to your diagram, and grey to the green line. What do I connect to ground? Thanks — Faisal Gondal
@faisalgondal - You also lost the inductor L5521 as well. I would recommend you leave the connectors active. Instead solder on wire leads to the socket pins and then solder the leads to the points OT pointed you to. You will need to solder the indictor inline with the lead that needs it. — Dan
Thanks Dan. Yes L5521 is lost too.

So with the sensor cable, I stick the new sensor on the LCD the other side expose the black and grey wires and solder to points shown by OT? And nothing else?

Thanks both — Faisal Gondal

iMac Intel 27インチ EMC 2390

LCD Temp Sensor broken on Logic board

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