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bluecrt
Joined: 25 Jan 2007
Posts: 20
Location: Australia
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| Posted: Wed Feb 28, 2007 6:17 am Post subject: D50s Lithium Battery SRAM Chip on the Aboard, What gives ? |
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Can any one Tell me what will happen when I change the M48Z35Y
LITHIUM Battery SRAM chip on the D50 ABOARD for a new one.
Because Now I get an error code 01
 Cheers Rod 
Last edited by bluecrt on Sun Mar 04, 2007 3:26 am; edited 3 times in total
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Dave Lister
Joined: 16 Jan 2007
Posts: 436
Location: Adelaide, South Australia
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| Posted: Wed Feb 28, 2007 10:16 am Post subject: |
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You ask this and you service Steve's projectors?!?!? 
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Wed Feb 28, 2007 10:33 am Post subject: |
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Fair go Dave.
The SRAM's are just reaching the end of their service life - no one has really had to deal with their failure before.
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bluecrt
Joined: 25 Jan 2007
Posts: 20
Location: Australia
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| Posted: Wed Feb 28, 2007 12:45 pm Post subject: |
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Is this forum here to help People or just criticize.
May be with a bit of communication we can avoid a repeat of the Steve issue?
I am trying work to keep these projectors alive and make sure they go back to there owners in the best condition?
I am sure Curt Palme was not born with a projector attached to his umbilical cord even he got some of his knowledge from others
Thanks MarK A W  Cheers Rod.
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Don Rombach
Joined: 06 Feb 2007
Posts: 130
Location: N Georgia
TV/Projector: Sony G70
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| Posted: Wed Feb 28, 2007 11:25 pm Post subject: |
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Does the battery run down even if the G or D series Sony's are always supplied with power? If so, at the same rate as well?
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BiG D
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drice1234
Joined: 07 Oct 2006
Posts: 1309
Location: Allen, Texas
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| Posted: Wed Feb 28, 2007 11:43 pm Post subject: |
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I cannot speak specifically to CRT's but on all of the equipment that we install with lithium batteries the batteries are there to maintain memory and power is always being drawn from the battery. These batteries are not connected to any type of a charging circuit. The only way to keep the panel from drawing power is to put a plastic tab between the battery and contact.
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Wed Feb 28, 2007 11:46 pm Post subject: |
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Sorry no, never swapped that chip on the Sony sets... yet.
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Don Rombach
Joined: 06 Feb 2007
Posts: 130
Location: N Georgia
TV/Projector: Sony G70
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| Posted: Thu Mar 01, 2007 12:05 am Post subject: |
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| drice1234 wrote: | | I cannot speak specifically to CRT's but on all of the equipment that we install with lithium batteries the batteries are there to maintain memory and power is always being drawn from the battery. These batteries are not connected to any type of a charging circuit. The only way to keep the panel from drawing power is to put a plastic tab between the battery and contact. |
So it is a time bomb. Bummer.
Might not be a bad idea to be proactive then, and have a spare on hand.
Would be good to know what is involved in swapping it out.
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BiG D
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bluecrt
Joined: 25 Jan 2007
Posts: 20
Location: Australia
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| Posted: Thu Mar 01, 2007 9:48 am Post subject: |
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| Curt Palme wrote: | | Sorry no, never swapped that chip on the Sony sets... yet. |
Thanks Curt for your Reply.
I had a failure on a Sony a board around the SRAM and I have been researching the hole Sony operating System ever since.
When I get to the Bottom Of the problem I will share it with all who are Interested. I will email you.
I have a few ideas about what Sony have been doing at the computer level.
I was hopeing somebody out there had got there first.
Best regards Rod
 
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bluecrt
Joined: 25 Jan 2007
Posts: 20
Location: Australia
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| Posted: Thu Mar 01, 2007 10:35 am Post subject: |
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| Don Rombach wrote: | | Does the battery run down even if the G or D series Sony's are always supplied with power? If so, at the same rate as well? |
I had a problem with the power supply in the stand by circuit.
The voltage on the 5 volt rail had become intermittently noisy and unregulated it damaged the 27c1001 and the EEPROM and the Battery SRAM.
After repairing the damage it just got even more complicated when I fitted
a new SRAM.
Cheers Rod
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bluecrt
Joined: 25 Jan 2007
Posts: 20
Location: Australia
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| Posted: Fri Mar 02, 2007 6:48 am Post subject: |
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| Curt Palme wrote: | | Sorry no, never swapped that chip on the Sony sets... yet. |
Just Need to share this with all of you who read my Post.
I have spent the Day working on the D50s SRAM error 01 Code problem.
I HAVE SOLVED IT.
You cannot just change the Lithium SRAM With a new one because the computer in the D50 does a check Sum report. And if it can not find the data the computer produces an error code and will not start the projector.
So what really happened to the A board was the irregular voltage did not destroy the SRAM it corrupted the data and failed start up test.
Last edited by bluecrt on Fri Mar 02, 2007 9:25 am; edited 1 time in total
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Axatax
Joined: 01 Nov 2006
Posts: 403
TV/Projector: Sony VPH-G70Q (aka Barco Cine8 Onyx)
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| Posted: Fri Mar 02, 2007 7:06 am Post subject: |
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Guys,
Chill out. It's not a "time bomb". Get yourself a new SRAM (they're ALL still available for the D50, G70, and G90 from DigiKey).
If you have a programmer, you can backup and re-write the memory.
If you don't have a programmer, fit your SRAM, flip DIP switch #1 on the YA board, power on the PJ, then push and hold the small black button on the top-middle edge of the YA board. Reset DIP switch #1, and power on your PJ. You'll need to do a full setup at this point.
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bluecrt
Joined: 25 Jan 2007
Posts: 20
Location: Australia
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| Posted: Fri Mar 02, 2007 9:24 am Post subject: |
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| Axatax wrote: | Guys,
Chill out. It's not a "time bomb". Get yourself a new SRAM (they're ALL still available for the D50, G70, and G90 from DigiKey).
If you have a programmer, you can backup and re-write the memory.
If you don't have a programmer, fit your SRAM, flip DIP switch #1 on the YA board, power on the PJ, then push and hold the small black button on the top-middle edge of the YA board. Reset DIP switch #1, and power on your PJ. You'll need to do a full setup at this point. |
Yes That’s what was required.
I did not need to touch the Dip swithes.
Wish you had posted that report yesterday. I worked through the board the hard way to get to that conclusion.
Any way thanks for the Reply.
Cheers Rod.
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Axatax
Joined: 01 Nov 2006
Posts: 403
TV/Projector: Sony VPH-G70Q (aka Barco Cine8 Onyx)
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| Posted: Sat Mar 03, 2007 6:21 am Post subject: |
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| Quote: | did not need to touch the Dip swithes.
Wish you had posted that report yesterday. I worked through the board the hard way to get to that conclusion.
Any way thanks for the Reply. |
Sorry I missed this. Good luck with your PJ.
Jeff
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ILOVEMYTHEATRE
Joined: 23 Jan 2007
Posts: 6
Location: NHILL, VIC AUSTRALIA
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| Posted: Sun Mar 04, 2007 3:29 am Post subject: |
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DAVE LISTER..... YOU'RE A SMEEE...G HEAD! (come on get a life! )
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d50q
Joined: 22 Nov 2007
Posts: 118
Location: ma usa
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| Posted: Fri Dec 07, 2007 3:31 am Post subject: sram |
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so if the sram gets corupted you can restore its programing by flipping dip switch one holding the switch down and
powering it on and then flipping dip switch one back
this will restore its programing or memory?
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Axatax
Joined: 01 Nov 2006
Posts: 403
TV/Projector: Sony VPH-G70Q (aka Barco Cine8 Onyx)
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| Posted: Fri Dec 07, 2007 7:42 am Post subject: |
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You can also use the YA board to copy one Dallas chip to another, by moving the old Dallas chip to the socket for the ROM which holds the default settings, then placing a new chip where the original chip came from. Press and hold the YA board button, then replace the settings ROM and the new Dallas chip.
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netpro
Joined: 13 Mar 2010
Posts: 5
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| Posted: Sun Mar 14, 2010 8:09 pm Post subject: Need help with a M48Z35 in my D50 |
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Hi guys,
I am 38 years old, living next to Braunschweig/Germany and new at this forum. I hope someone can give me an advice
how to fix my problem.
I have found and read this posting https://www.curtpalme.com/forum_archived/viewtopic.php@t=4142.html , about the dallas chip issue but unfortunately, too late.
I have a D50Q from 2001 with about 1490 hrs. I bought my one, as I think, in good condition 2 months ago.
A few weeks ago, I mounted the PJ on the ceiling. After watching for some hours, powering off, turning on again some days later, I realized I always had to adjust the convergence again.
So I thought to change the dallas (M48Z35Y-70PC1), ordered from littlediode and tried to read out the old one. I was hoping that voltage
would be enough to hold the data. I tried a lot to read out (within 60 minutes after pulling out) but wasn´t succesful.
I tried with Willem Prom Ver.097g/ja and my ATH3.1 SS , as DS1230, AT28C256, 28C256 and at least with 29C256 (read something about somewhere).
Nada. No data as i think (only 04 06 data).
After being unsuccessful, I put the chip back and since then I get Red Error Code 10.
Can anybody tell me how bad it is now...is it hard or even impossible to get a perfect picture as before ?
Does anybody have a working data file for me and can tell me how to burn and go ahead in the right order ?
I would like to put back my hrs and serial no. , simple hex editor and writing into which adresses ?
Thank you very much in advance.
Regards,
Vince
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I love my D50*
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