Hello to everyone
Model: Dell 3537
MB Code: LA-9981P
Problem of motherboard: Short circuit
1. First appeared on the motherboard this was the problem. SY8206D (+1.05VSP). Its pwm was burned and there was a hole in the pcb. Remove pwm.
I cleaned the burnt part. Replace SY8206D -> SY82068D
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2. Power supply connected and short circuit. RTL8106E started to warm and remove ic.
3. Let's start the measurements now. +1.05VSP PL301 - 0.6 Ohm. This is not normal full short circuit.
That means the CPU is corrupt. When I put 1 voltage on that line, the chipset started to get hot.
4. There was also a short circuit in this line +3VALW_PCH. J513 (Jumper) - 0.4 Ohm.
I'm sure now the CPU is broken
5. Other short circuit GPU and VRAM-s.
GPU coil PL802 1.5 ohm.
VRAM coil PL1101 +1.35VGPUP - 0.8 ohm.
6. CPU, GPU and VRAM-s remove. All short circuits disappeared. Everything is normal.
This is an Intel U series processor. i5-4200U. An expensive CPU.
Intel's processors are always expensive.
I offered the client an i3-4005U CPU. Second hand. I did not change the GPU.
The customer accepted in that case. UMA only.
And I started trading...
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Soldering was very successful. It is necessary to make new measurements. I have to be sure of everything.
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Yes, everything is okay
Let's start the motherboard now
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Good Day
补充内容 (2020-10-29 18:48):
Compal LA-9981P CPU short circuit
评论
motherboard war
评论
don't forget to support
评论
Broke a lot of things.Brother, but you don’t seem to use the diode gear to measure.I'm not used to watching.
评论
主板烧的东西太多了！你那不是正在打仗吗？来自苹果APP客户端
评论
yourareveryverygood
评论
I usually take measurements with om. gives healthier results
评论
You're great
Did it take a lot of time to fix this
评论
最后独显没有装上去？改成继成显卡了？ 电路 电子 维修 求创维42c08RD电路图 评论 电视的图纸很少见 评论 电视的图纸很少见 评论 创维的图纸你要说 版号，不然无能为力 评论 板号5800-p42ALM-0050 168P-P42CLM-01 电路 电子 维修 我现在把定影部分拆出来了。想换下滚，因为卡纸。但是我发现灯管挡住了。拆不了。不会拆。论坛里的高手拆解过吗？ 评论 认真看，认真瞧。果然有收
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