and555 писал(а):
clean the socket of RAM, did you try it?
yes,try with diffrent ram and souket
no change
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| 4520 (S-Class Intel) no display https://vlab.su/viewtopic.php?f=53&t=65380 |
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| R EZ A [ 31 авг 2017, 12:19 ] | |
| Заголовок сообщения: | 4520 (S-Class Intel) no display |
hello masters this laptop at the first came for no turn on i find kbc damage and replace it now it turns on but no display use 1.3A and restart after 30 sec voltages are good i flash bios,replace kbc again but no change anyone has any idea whats wrong here? tnx all |
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| and555 [ 31 авг 2017, 12:42 ] | |
| Заголовок сообщения: | Re: 4520 (S-Class Intel) no display |
clean the socket of RAM, did you try it? |
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| R EZ A [ 31 авг 2017, 12:54 ] | |
| Заголовок сообщения: | Re: 4520 (S-Class Intel) no display |
and555 писал(а): clean the socket of RAM, did you try it? yes,try with diffrent ram and souket no change
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| and555 [ 31 авг 2017, 13:04 ] | |
| Заголовок сообщения: | Re: 4520 (S-Class Intel) no display |
R EZ A писал(а): no change Is the motherboard has a discrete chip? |
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| R EZ A [ 31 авг 2017, 13:16 ] | |
| Заголовок сообщения: | Re: 4520 (S-Class Intel) no display |
and555 писал(а): R EZ A писал(а): no change Is the motherboard has a discrete chip? yes ATI chip |
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| and555 [ 31 авг 2017, 13:27 ] | |
| Заголовок сообщения: | Re: 4520 (S-Class Intel) no display |
R EZ A писал(а): ATI chip I guess the problem is on this chip. But, what about the voltages on L44, L35, and vcore? |
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| R EZ A [ 04 сен 2017, 13:27 ] | |
| Заголовок сообщения: | Re: 4520 (S-Class Intel) no display |
and555 писал(а): R EZ A писал(а): ATI chip I guess the problem is on this chip. But, what about the voltages on L44, L35, and vcore? but customer said it was ok befor turning off! L44=1.1V there is no L35 |
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| and555 [ 04 сен 2017, 21:59 ] | |
| Заголовок сообщения: | Re: 4520 (S-Class Intel) no display |
R EZ A писал(а): there is no L35 So, the motherboard discrete only. btw, what about the voltage on vcore? Tip: Mmmm, for confirming its a vga chip problem, I usually blowing at the bottom side of the chip with hotair, mostly it will give a display a moment, and then re-balling or replace the chip, depend on the customer wants. |
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