#1 Toshiba L850 - PLF/PLR/CSF/CSR DSC MB REV 2.1 , from 216-0833000 to 216-0835063
przez Mobotool • 11 lipca 2019, 13:04
Hi to all,
I have to repair this board that has a typical problem of the died ATI 216-0833000 (I heated the core, and the video came back again), so I was intended to change it.
I have no other GPU with same code at the moment, but only one 216-0835063 that I bought for a Samsung AIO DP700A7D (in which I installed it onto the "Mercury Rev 1.0" but the board was already been reworked before me and I believe it lose some internal layers connections because, after soldering, the image was striped, as when video memory loose connections with mainboard).
I compared pinout and schematics between the Inventec Louis and Louis1.1 boards (that belong to the HP Envy 17-3290NR, in which you can find alternatively a Whistler 216-0810001/5/84 or a Heathrow 216-0834002/0835063 chips) and decided to give it a try, because I thought that it could work, as I did with the replacement between the 216-0810028 and the 216-0833000 on a previous same Toshiba/Pegatron board.
The main difference I see between those boards are the video RAM chips, because in the Inventec and Samsung ones there are GDDR5 chips, instead in the Toshiba/Pegatron board there are GDDR3 (K4W2G1646C-HC11 ).
I then soldered the 216-0835063 on the Toshiba/Pegatron board, tried with the stock biosrom (6.80) and of course it didn't work...
Then I dumped the Toshiba bioschip (unsoldering the chip and using the Willem Programmer to read/write) and inserted the "Heathrow rom module" into the Toshiba bios, but again it didn't work.
I did the replacement of the video roms in different ways, everytime using the free H2OEZE software, version 100.002.13.
I took the Heathrow rom modules from two different sources, from the official HP website (HP Envy 17-3290NR F.08Bm that has 6 different rom versions) and from a dump of the Samsung DP700A7D (that has both the Thames XT and the Heathrow Pro roms, 1 rom each).
I'm sure that both the HP and the Samsung extracted video rom modules are for the Heathrow core, because opening them in the HxD, I can read just the Heathrow name.
Firstly, I extracted the eight original videoroms of Toshiba just to understand how they looked into the HxD and how many KB they were, then I started replacing different ones, firstly only the two "6760" rom, then only the two "6840", then replacing all the 8 video roms of the Toshina BIOS, taken respectively from the HP or the Samsung, but no combination until now gave me an image on the screen, the only reaction that I have is that the system starts from the power button, then after 4 seconds fan starts spinning at the max and capslock and numlock keys work and can be lighted if pressed (and it shuts down correctly if I press again the power button).
The system seems to start, but there is no image, even from the VGA output, the I think the system can't drive the GPU core correctly.
I opened the Toshiba biosfile in H2OEZE and from the menu "Binary-Rom -> OpROM -> replace OpROM" I replaced roms taken from the two sources, but since I'm not an expert of this kind of manipulations, I don't know if I'm doing something wrong, and I don't know if it is so simple to replace a rom in an H2O bios.
I did some GPU bios rom replacements a few times in the past, on some Sony notebooks, using "Phoenix BIOS Editor" or "Phoenix Tool", and had succes eveytime.
I have many other questions in my mind:
- Do I use the correct software to replace the videorom in this Toshiba bios, or should I use other ones?
- Why are there two or more rom of the same version for the same GPU in the same bios file?
- Are the extracted video rom incorrect for the 216-0835063?
- Is it a checksum problem?
- Can the Heathrow core work with the GDDR3 VideoRAM installed into the Toshiba/Pegatron board (in the HP and Samsung, video RAM are GDDR5, but in the schematics there are configurations for both the GDDR3 and the GDDR5)?
- Can the Heathrow core work with GDDR3 if in the rom file its name is "HP IEC Louis 1.1 3D Heathrow Pro GDDR5 PX 5.0 64Mx32" or "Samsung AIO Mercury Heathrow Pro GDDR5 64Mx32", and so its configuration maybe only for GDDR5 memories ?
- Do someone know if there are any other incompatibilities that make impossible for the 216-0835063 to work into this Toshiba/Pegatron board?
I have not seen any schematics or boardview or cad for this toshiba/Pegatron board, so I can't investigate further.
I also compared the HD photos with my Toshiba board, but there are no differences at all.
With the Heathrow oprom extracted from Samsung AIO, Post code stops at 28.
Please, if someone can help me or explain to me how to modify this Toshiba bios with the correct ROM, or if someone has a Heathrow ROM configured for the GDDR3 memories, I'm ready to pay for this information if it makes the Toshiba board work correctly with the 216-0835063 GPU.
I can upload the dump of the Toshiba board if someone wants to help me modifying it, and I share here the two Heathrow roms, maybe they can be useful for someone else
I have to repair this board that has a typical problem of the died ATI 216-0833000 (I heated the core, and the video came back again), so I was intended to change it.
I have no other GPU with same code at the moment, but only one 216-0835063 that I bought for a Samsung AIO DP700A7D (in which I installed it onto the "Mercury Rev 1.0" but the board was already been reworked before me and I believe it lose some internal layers connections because, after soldering, the image was striped, as when video memory loose connections with mainboard).
I compared pinout and schematics between the Inventec Louis and Louis1.1 boards (that belong to the HP Envy 17-3290NR, in which you can find alternatively a Whistler 216-0810001/5/84 or a Heathrow 216-0834002/0835063 chips) and decided to give it a try, because I thought that it could work, as I did with the replacement between the 216-0810028 and the 216-0833000 on a previous same Toshiba/Pegatron board.
The main difference I see between those boards are the video RAM chips, because in the Inventec and Samsung ones there are GDDR5 chips, instead in the Toshiba/Pegatron board there are GDDR3 (K4W2G1646C-HC11 ).
I then soldered the 216-0835063 on the Toshiba/Pegatron board, tried with the stock biosrom (6.80) and of course it didn't work...
Then I dumped the Toshiba bioschip (unsoldering the chip and using the Willem Programmer to read/write) and inserted the "Heathrow rom module" into the Toshiba bios, but again it didn't work.
I did the replacement of the video roms in different ways, everytime using the free H2OEZE software, version 100.002.13.
I took the Heathrow rom modules from two different sources, from the official HP website (HP Envy 17-3290NR F.08Bm that has 6 different rom versions) and from a dump of the Samsung DP700A7D (that has both the Thames XT and the Heathrow Pro roms, 1 rom each).
I'm sure that both the HP and the Samsung extracted video rom modules are for the Heathrow core, because opening them in the HxD, I can read just the Heathrow name.
Firstly, I extracted the eight original videoroms of Toshiba just to understand how they looked into the HxD and how many KB they were, then I started replacing different ones, firstly only the two "6760" rom, then only the two "6840", then replacing all the 8 video roms of the Toshina BIOS, taken respectively from the HP or the Samsung, but no combination until now gave me an image on the screen, the only reaction that I have is that the system starts from the power button, then after 4 seconds fan starts spinning at the max and capslock and numlock keys work and can be lighted if pressed (and it shuts down correctly if I press again the power button).
The system seems to start, but there is no image, even from the VGA output, the I think the system can't drive the GPU core correctly.
I opened the Toshiba biosfile in H2OEZE and from the menu "Binary-Rom -> OpROM -> replace OpROM" I replaced roms taken from the two sources, but since I'm not an expert of this kind of manipulations, I don't know if I'm doing something wrong, and I don't know if it is so simple to replace a rom in an H2O bios.
I did some GPU bios rom replacements a few times in the past, on some Sony notebooks, using "Phoenix BIOS Editor" or "Phoenix Tool", and had succes eveytime.
I have many other questions in my mind:
- Do I use the correct software to replace the videorom in this Toshiba bios, or should I use other ones?
- Why are there two or more rom of the same version for the same GPU in the same bios file?
- Are the extracted video rom incorrect for the 216-0835063?
- Is it a checksum problem?
- Can the Heathrow core work with the GDDR3 VideoRAM installed into the Toshiba/Pegatron board (in the HP and Samsung, video RAM are GDDR5, but in the schematics there are configurations for both the GDDR3 and the GDDR5)?
- Can the Heathrow core work with GDDR3 if in the rom file its name is "HP IEC Louis 1.1 3D Heathrow Pro GDDR5 PX 5.0 64Mx32" or "Samsung AIO Mercury Heathrow Pro GDDR5 64Mx32", and so its configuration maybe only for GDDR5 memories ?
- Do someone know if there are any other incompatibilities that make impossible for the 216-0835063 to work into this Toshiba/Pegatron board?
I have not seen any schematics or boardview or cad for this toshiba/Pegatron board, so I can't investigate further.
I also compared the HD photos with my Toshiba board, but there are no differences at all.
With the Heathrow oprom extracted from Samsung AIO, Post code stops at 28.
Please, if someone can help me or explain to me how to modify this Toshiba bios with the correct ROM, or if someone has a Heathrow ROM configured for the GDDR3 memories, I'm ready to pay for this information if it makes the Toshiba board work correctly with the 216-0835063 GPU.
I can upload the dump of the Toshiba board if someone wants to help me modifying it, and I share here the two Heathrow roms, maybe they can be useful for someone else