CurtPalme.com Home Theater Forum

oliverg · Posted: Tue Oct 23, 2007 4:28 am Post subject:

It all depends on what sort of machine you get - some are as easy as putting two chips in and hitting a button.

Others require all sorts of dip switches to be set for each type of chip. The list goes on.

The main issue is that once the data in your Dallas chip is corrupted, its gone. You can't copy it if its corrupt - you'll just copy the corruption.

For the average person, its best just to go through the menus and write the settings down manually - there aren't that many.

Kind regards

rsh · Joined: 01 Aug 2007 Posts: 66

Folks,

It seems to me that it is a good idea to save all the user data (focus and registration) to a service block as service data. I am not sure I understand why it is not done after the projector is calibrated... Am I missing something here?

Now, I if the user data has not been saved to a service block, and the Dallas chip went bad all the user data is lost. Does it mean that full calibration needs to be done? It seems to me that lens focus and scheimpflag adjustment should be skipped since the lens position did not change. I am talking about the step when you physically adjust the focus by turning the tube screws. Am I wrong again?

Thanks
Roman

oliverg · Posted: Tue Oct 23, 2007 3:32 pm Post subject:

I haven't tried saving user data into the service area - does it save all settings? Is there even enough room? Has anyone actually done this?

rsh · Joined: 01 Aug 2007 Posts: 66

Well,

Got the Dallas chip, installed it, pressed the S202 for 5 seconds - nothing. Now I do not even get an error. It is showing 88 in red, 88 in orange, then nothing - no numbers at all - used to show 30 in green.

I tried it again, and it is either goes 88 red, 88 orange and stays 88 orange, or it goes 88 red, 88 orange, nothing.

Any suggestions?

oliverg · Posted: Fri Oct 26, 2007 8:13 am Post subject:

You absolutely sure you got a chip that is an equivelant?

I hope you haven't destroyed your YA board with static Sad

RSH, did you use static gear? Or did you risk it?

• Immediately after the MAIN POWER switch is turned on, “88” is
displayed in red, then in orange, for about two seconds. This is not a
problem. The unit initializes the CPUs during this period

Do you get any activity at all? Put a source into it so it has something to lock onto, or try a test pattern where it will use internal oscillation.

rsh · Joined: 01 Aug 2007 Posts: 66

oliverg,

Yes, I had a friend of mine who brought a static gear replaced the chip for me. It is the same chip. I bought from Newark http://www.newark.com/jsp/Semiconductors+&+Prototyping/Memory/MAXIM+DALLAS/DS1245Y-120+/displayProduct.jsp?sku=88K4025

There is no activity. When I turn the projector on,

Old chip: 80 red, 80 orange, 30 Green (or it stays 88 orange)
New Chip: 80 red, 80 orange, nothing (or it stays 88 orange, a couple of times it gave me 11 green).

The Projector does not come out of standby mode.

overclkr · Joined: 08 Mar 2006 Posts: 4227

Did you try to reflash the firmware?

rsh · Joined: 01 Aug 2007 Posts: 66

overclkr · Joined: 08 Mar 2006 Posts: 4227

Ok, if I remember correctly, you need to re-flash the firmware to the projector using computer/RS232 cable. There is a thread over at the "A" site with instructions.

You have incomplete firmware right now if I'm not mistaken hence why the projector will not power up.

I have the firmware at home and can email it to you if you need it.

Cliff

rsh · Joined: 01 Aug 2007 Posts: 66

Cliff,

I would appreciate it if you can.

Please email it to sales@rtheaters.com

Do you have a link to the thread where it described how to do it?

overclkr · Joined: 08 Mar 2006 Posts: 4227

rsh · Joined: 01 Aug 2007 Posts: 66

Cliff,

I got it - thank you very much.

I have a couple of questions if you do not mind.

There are 2 files there:

1. PJUpdate.zip
2. G90uv11.zip

I assume I need both of them?

I found this thread on the AVSForum. Is this a proper procedure (see below)?

overclkr · Joined: 08 Mar 2006 Posts: 4227

Yep. One is the software, the other is the firmware.

A regular serial cable WILL NOT work. You have to rewire it to the pinout listed above.

GOOD LUCK!!!

I flashed my 2nd G90 in the past because it had earlier firmware and I wanted them to match. It's easy. Don't sweat it.

Cliff

rsh · Joined: 01 Aug 2007 Posts: 66

Damn,

I only have a molded serial cable. Hmm.. need to go find one and rewire it.

Why would't they stick to a standard?

Anyway, thank you for everything.

Roman

rsh · Joined: 01 Aug 2007 Posts: 66

Well,

Eventually I had some time tonight. I have made the Serial RS232 Cross Cable, connected the PC to G90 (Thanks Cliff for the PJUpdate program) and tried to follow the instructions above. The Program recognized the G90 just fine, but in Emergency mode would not initiate upload; came back with the error - to many retries, could not initiate the upload. So, I tried a regular non-emergency mode, and it began uploading the OS. It did take about 10 minutes, and I was watching the Error Window on the Projector - it was showing 11 in green while uploading.

So, the upload finished in 10 minutes with successful message. I turned the projector off, set the index back to 01, turned it on - same thing - 88 red, 88 orange, nothing. The PJ did not come out of stand by, and there is no error message - dark screen.

I do not know what else to do. I tried to call Sony the other day, but they were helpless. They told me there was a guy in Teaneck, NJ (Al?), who may help, but would not give me his phone number.

Please anyone who may help or give a suggestion what else I could do or direct me to the person who can help?

I would greatly appreciate it.

Thank you
Roman

overclkr · Joined: 08 Mar 2006 Posts: 4227

Roman,

Sounds like it's time to send your board to Curt. If you succesfully flashed the firmware and she still wont fire, something else is in the kipper in regards to pissing you off even more........

Cliff

rsh · Joined: 01 Aug 2007 Posts: 66

Thanks Cliff,

Curt,

Are you around? Smile

Do you think you can help?

Thanks
Roman

oliverg · Posted: Tue Oct 30, 2007 7:22 am Post subject:

What cable were you using for the serial transfer? The COM interface on your PC, what type is it? (is it an older PC with real COM ports or a USB->COM adapter)

EDIT: sorry I didn't read the earlier part of the thread. It may be that emergency mode requires some handshaking that your current cable can't handle (eg its missing CTS or RTS) - some serial cables I've seen have amazingly only had ground, transmit data (tx) and receive data (rx) !

The fact that emergency mode doesn't work but non-emergency does means the interface might be OK but the question is why the retries with emergency mode?

RSH what happens if you put your old chip back in again and do the S202 init then do the emergency/non emergency upload onto it?
The chip might work if its getting power, its just when the power goes it will lose the settings.

Are you 100% sure the chip is the right one? Its a Y with 120 on the end? (I think lower speeds work too but I'm curious)

Curt will have a working chassis soon so he will probably be able to fix yours.

Good luck

**Curt Palme** · Posted: Tue Oct 30, 2007 1:52 pm Post subject:

About all I can do is check the board in another set here. But at an $1800 bill from Sony, send it to me first.

I am ramping up to do full Sony repairs, but never having had a bad G90 to repair, I'm in the beginning stages. But electronics is electronics, right?

The full service manual is here.. Smile

oliverg · Posted: Tue Oct 30, 2007 1:55 pm Post subject:

Curt, you're like someone I know and someone I know of. My father who could build a TV transmitter from an old clock radio and a home made soldering iron and that other bloke - MacGyver.

I have total faith in your ability to fix anything electronic or electrical. Smile

Kind regards

(in fact, you're probably one of the few people that knows the difference between electrics and electronics)