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| TOSHIBA Satellite L50D (DA0BLMMB6E0 Rev. E) No lcd image, hdmi ok. https://vlab.su/viewtopic.php?f=54&t=70260 |
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| andromedax [ 29 дек 2017, 20:34 ] | |
| Заголовок сообщения: | TOSHIBA Satellite L50D (DA0BLMMB6E0 Rev. E) No lcd image, hdmi ok. |
Hi, This motherboard have image on hdmi output, but nothing in lcd. It has all voltages in lvds connector, but no pulses in I2CC_SCL and I2CC_SDA. (measured with oscilloscope, only 3v. dc in both pines) I have no schematic nor boardview, so I am using the LA-9532P for reference only. LA-9532P has the same IC for LVDS translator (RTD2132), and this chip seems to establish communication with lcd screen bus, and lvds video signals. (it does not happen in this board) Somebody can share the datasheet of RTD2132, or any help to solve this problem? Thanks. |
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| NoWAYouT [ 30 дек 2017, 00:49 ] | |
| Заголовок сообщения: | Re: TOSHIBA Satellite L50D (DA0BLMMB6E0 Rev. E) No lcd image, hdmi ok. |
Measure resistance of TX lines on lcd connector, if it`ll differ- change translator |
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| andromedax [ 30 дек 2017, 19:54 ] | |
| Заголовок сообщения: | Re: TOSHIBA Satellite L50D (DA0BLMMB6E0 Rev. E) No lcd image, hdmi ok. |
NoWAYouT писал(а): Measure resistance of TX lines on lcd connector, if it`ll differ- change translator There is no difference on tx lines on lcd connector, and no short circuit to gnd either. (ohms mode and diode mode are values as expected) From pin 19 to pin 26 all measurements seems correct, with the exception of resistance reading between pairs of signals. (ie: resistance from pin 19 and pin 20 is is greater than 1 Mega-ohm) It seems to me a bit higher than it should, as it is a low impedance output. that's why I need the data sheet for RTD2132. Regards. Вложение: RTD2132S.JPG
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| Котеус [ 20 янв 2018, 16:15 ] | |
| Заголовок сообщения: | Re: TOSHIBA Satellite L50D (DA0BLMMB6E0 Rev. E) No lcd image, hdmi ok. |
Have RTD2132 power and EN signal? If have - change translator. If have not - search why haven't. |
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