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emdawgz1
Joined: 14 Mar 2006
Posts: 7949
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| Posted: Wed Apr 01, 2009 8:12 pm Post subject: |
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| macgyver655 wrote: |
I'll agree with that. The G90 along with all Sony's CRT projectors fall under Sony business and professional section, not consumer. That was their target area and they dont care otherwise.
You G90 owners better start acquiring YA boards if you want to keep your unit running for some more years. Just hope they dont end up costing more then a whole projector without one.
Face it guys, the G90 is destined for the recycling centers............ |
It's sad but true, I have found a G90 recycling center... its right here in Phila... So please, send your '90's here. We'll make sure they spend their declining years in comfort. 
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Wed Apr 01, 2009 8:24 pm Post subject: |
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Sony sucks !
If they had any guts they would reply with the needed information.
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stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
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| Posted: Wed Apr 01, 2009 9:21 pm Post subject: |
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| Tom.W wrote: | | Sony sucks ! |
Buy a AmPro 
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Fredrik
Joined: 03 Jul 2007
Posts: 49
Location: Stockholm
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| Posted: Thu Apr 02, 2009 5:27 pm Post subject: |
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Maybe the reason for a custom chip was to make sure it broke after 2-3 years to keep customers paying 
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emdawgz1
Joined: 14 Mar 2006
Posts: 7949
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| Posted: Thu Apr 02, 2009 5:33 pm Post subject: |
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I just dont get it. How many 90's were made total?
a few thousand? And for this, a global conglomerate like sony is supposed to move the planet an inch to the left???
The g90 is a pimple on the butt of the flea on the butt of Sony!
It's not the best service known to man but it aint the end of the world.
BTW has anyone tried working thru a Sony PRO dealer like Fu Hou?
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HaydnG90
Joined: 22 May 2006
Posts: 1356
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| Posted: Thu Apr 02, 2009 5:52 pm Post subject: |
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| emdawgz1 wrote: |
BTW has anyone tried working thru a Sony PRO dealer like Fu Hou? |
I spoke to a representative from HF a few weeks ago. They have new G90's sitting in the warehouse waiting to ship. They offer a one year warranty but it isn't an OFFICIAL Sony warranty. Basically if the set breaks within that year and parts can't be found eg YA board IC's, they would refund the money. After the year is up you're SOL. Not sure how they can still justify $20K with those conditions.
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JohnHWman
Joined: 15 May 2007
Posts: 215
Location: France - Grenoble
TV/Projector: Sony VPH-G90U (one unit for me, four others units repaired and sold)
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| Posted: Thu Apr 02, 2009 6:25 pm Post subject: Getting worst and worst ... |
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All,
For your information, some Sony people are reading this thread since I've provided a link to them.
Here is some more information I just get from my japanese friend :
Hi John,
Now I am traveling in the US.
When I was in Japan I've got phone call from Ixxxx-san.
Per his comment the situation is getting worse because of the following reason :
1. Sony does not want to provide any design information of G90 (or any products of sony)
due to internal security and product liability reason.
2. Ixxxx-san tried to order 2-3 YA board but after PO the distributor found the inventory list
was wrong and no stock at all.
What Ixxxx-san can do is to keep two full set of G90 that is for user who wish to have whole G90 product for back up.
Ixxxx-san feels really sorry for this situation but nothing we can do for you and your friends.
I am also very sorry for you about above bad news.
xxxx
Not really suprizing  Just a written confirmation that we shoudn't been ever able to get the technical information on this CXD305-127R chip 
John
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HaydnG90
Joined: 22 May 2006
Posts: 1356
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| Posted: Thu Apr 02, 2009 6:45 pm Post subject: Re: Getting worst and worst ... |
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| JohnHWman wrote: |
1. Sony does not want to provide any design information of G90 (or any products of sony)
due to internal security and product liability reason.
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What liability problems? I guess Sony just wants all this old technology to die and go away. Are they worried that someone will sue them for radiation exposure or injury caused by an imploding CRT tube . Such a shame for what really is a great piece of equipment.
They clearly have the data sheets we need but as has been stated, won't share the info. Is this normal in the industry?
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Apr 02, 2009 6:48 pm Post subject: |
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Internal security.........HA!!!!!!!!!!!!! What the fcuk would be in a chip that controls some DAC's thank would be a security issue!!!!!! bull****............. And liability.....another HA!!!!!!!!!!!!! What the hell would be the liability of a friggin datasheet ?????????????? MORE bull****!!!!!!!!!!!!!!!!!!!!!!!!
SONY JUST SUCKS...PLAIN AND SIMPLE.......................... 
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Apr 02, 2009 6:51 pm Post subject: Re: Getting worst and worst ... |
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| HaydnG90 wrote: | | JohnHWman wrote: |
1. Sony does not want to provide any design information of G90 (or any products of sony)
due to internal security and product liability reason.
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They clearly have the data sheets we need but as has been stated, won't share the info. Is this normal in the industry? |
No, this is not normal. I rarely have a problem getting a datasheet and believe me...I look at a lot of them. Now that I think of it, its Sonys datasheets more often that are hard to come by.
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Apr 02, 2009 6:54 pm Post subject: |
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But I will also add that the datasheet is not the only requirement here. Even if a datasheet magically appeared, you would still need the logic programming for it. Then find a comparable chip, which I doubt even exists.
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Thu Apr 02, 2009 7:49 pm Post subject: |
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| macgyver655 wrote: | | But I will also add that the datasheet is not the only requirement here. Even if a datasheet magically appeared, you would still need the logic programming for it. Then find a comparable chip, which I doubt even exists. |
you can actualy download information from a good chip and load it into a chip burning machine no?
I haven't read the entire thread, but with all the brains on this forum I would expect someone here is able to download the info off the chip,identify it's operating parameters, and just spec in a replacement?
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Fredrik
Joined: 03 Jul 2007
Posts: 49
Location: Stockholm
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| Posted: Thu Apr 02, 2009 7:50 pm Post subject: |
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As emdawgz1 says it's probably not anyone at Sony who cares of such a small amount of units.
On the other hand since G90 is/was the cream of the crop those who own them from start or even a second hand unit is probably not Joe Sixpack.
Will the next PJ or TV be from Sony the coming years from the people who got a G90 with stupid chip breaking.
Kind of reminds me of the chassi to an old Digital Alpha server which had a puny .2 cent microswitch to check for intrussion etc.
If it broke or someone was a bit rough in replacing the chassi cover it took the server down or it was not possible to power it on.
Here you have great expensive machine and it breaks for a puny part
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Apr 02, 2009 8:01 pm Post subject: |
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| draganm wrote: | | macgyver655 wrote: | | But I will also add that the datasheet is not the only requirement here. Even if a datasheet magically appeared, you would still need the logic programming for it. Then find a comparable chip, which I doubt even exists. |
you can actualy download information from a good chip and load it into a chip burning machine no?
I haven't read the entire thread, but with all the brains on this forum I would expect someone here is able to download the info off the chip,identify it's operating parameters, and just spec in a replacement? |
On some occasions yes. I have retrieved data from many a chips but in this type of device its more complicated then that. Plus these types of chips can have built in security measures that make the logic part inaccessible. These types of chips also use a boundry scan access which again require special software to access.The point is...someone would have to spend hours and hours just to try to retrieve the data but then also not know if what they got was corrupted or not...or if all was dumped........It would take a large commitment .....and you would have to be sure that if you did get the correct data that you had a chip to load it on and capable of the originals functions.....
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HaydnG90
Joined: 22 May 2006
Posts: 1356
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| Posted: Thu Apr 02, 2009 8:02 pm Post subject: |
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/quote] you can actualy download information from a good chip and load it into a chip burning machine no?
[/quote]
Sounds reasonable although I'm no expert. Many have copied their Dallas chips onto new ones without any problems.
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HaydnG90
Joined: 22 May 2006
Posts: 1356
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| Posted: Thu Apr 02, 2009 8:04 pm Post subject: |
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OK guess its not so straightforward for an IC
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Apr 02, 2009 8:05 pm Post subject: |
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| Fredrik wrote: | As emdawgz1 says it's probably not anyone at Sony who cares of such a small amount of units.
On the other hand since G90 is/was the cream of the crop those who own them from start or even a second hand unit is probably not Joe Sixpack.
Will the next PJ or TV be from Sony the coming years from the people who got a G90 with stupid chip breaking.
Kind of reminds me of the chassi to an old Digital Alpha server which had a puny .2 cent microswitch to check for intrussion etc.
If it broke or someone was a bit rough in replacing the chassi cover it took the server down or it was not possible to power it on.
Here you have great expensive machine and it breaks for a puny part |
This fiasco is nothing new to Sony. For as long as I can remember, Sony has been using proprietary chips in all their electronics and then not have replacement parts available. It is their common practice.
But, people just seem to keep buying their sh*t!!!!!!!!!!!!!!!!!
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Apr 02, 2009 8:08 pm Post subject: |
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| HaydnG90 wrote: | /quote] you can actualy download information from a good chip and load it into a chip burning machine no?
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Sounds reasonable although I'm no expert. Many have copied their Dallas chips onto new ones without any problems.[/quote]
The dallas chip is a piece of cake compared to this chip. First off, the dallas chip.......IS NOT MADE BY SONY............ Second, it was designed to be a replaceable part because of the internal battery having a limited life span.....
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JohnHWman
Joined: 15 May 2007
Posts: 215
Location: France - Grenoble
TV/Projector: Sony VPH-G90U (one unit for me, four others units repaired and sold)
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| Posted: Thu Apr 02, 2009 8:22 pm Post subject: |
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Dallas DS1245Y chip is a simple 128KB SRAM memory with an easy access. Nothing difficult to dump his content as this is just memory cells with no access protecting system...
Dumping a programmable complex logic IC is not as easy as their ROM content ('fuses' array) is always protected from reading. You may be able to rewrite the chip but never been able to read it... Then, without the ROM 'fuses' map of this IC in hands together with the writing protocol shemee, you can't reprogram the failed chips.
The 'simpliest' way is probably to reverse engineering the functions of the IC based on inputed data versus outputed data and redo all these functions inside a new PLD device.
It's not a couple of hours job, indeed What else can we do 
John
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Fri Apr 03, 2009 3:37 pm Post subject: |
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| JohnHWman wrote: | It's not a couple of hours job, indeed What else can we do
John |
I might be able to jimmy rig an Ampro board in there.......
Might get another 20 years out of her then........ 
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