CurtPalme.com Home Theater Forum

[HaydnG90]

Hi Frank
Check out this thread, especially the last few pages. Key improvements I'm seeing due to BA board mods are in resolution, saturation, black level, and they're very obvious. Still need to get the set recalibrated but I'll wait until I move again to do this. The picture looks so good as is.

https://www.curtpalme.com/forum_archived/viewtopic.php@t=8507.html

[Clarence]

[Curt Palme]

We used to think there was, there's a looong thread here somewhere about it that I started a couple of years ago.
The general consensus was that the chip usually failed at the 1000-1500 hour mark, but I recently had a couple of bad ones at 3500 and 5000 hours, so that theory is toast more or less.

[Curt Palme]

We used to think there was, there's a looong thread here somewhere about it that I started a couple of years ago.
The general consensus was that the chip usually failed at the 1000-1500 hour mark, but I recently had a couple of bad ones at 3500 and 5000 hours, so that theory is toast more or less.

[CIR Engineering]

[Spanky Ham]

So, those can fail at 1k or 5k hours?

[Curt Palme]

I don't think there's a given time frame at this point. I've had quite a few of the 'suspect' chips be just fine. I try to keep a good Ya board here, as does Craig, to keep our customers running, but while it does seem that the failures occur with one run of chip, I don't think that every chip in that run was affected.

[Curt Palme]

I don't think there's a given time frame at this point. I've had quite a few of the 'suspect' chips be just fine. I try to keep a good Ya board here, as does Craig, to keep our customers running, but while it does seem that the failures occur with one run of chip, I don't think that every chip in that run was affected.

[CIR Engineering]

[Clarence]

[Clarence]

[Nashou66]

I'll have cliff look for mine. I never even fired up the G90 I have yet!!! Might go BOOM win cliff tries it!!

Nashou

[Frank D]

Well after about 6.5 years I had to copy and change my current Dallas chip (previously copied and changed it in March 2008) onto a new one as the battery started showing signs of weakening. So it really did not last 10 years.

All is back and running well now.

[saigo]

Hello Franck and all,

A big thanks for your precious tutorial!

I possess a G90 Sony, I want to change the Dallas chip.

I bought a EPROM programmer and compatibles chips (M48Z128Y-120PM1)
Being not at all a regular to this genre of equipment, I need advice, already how to install correctly the programmer on my PC, connection Parallel port and USB, program etc....

On the procedure he write about a small circular mark to identify the brooch 1 on the chip of origin, but how identify it on the programmer and on the new chip because there is no number?
I do not want to make a mistake about direction.

Thank you in advance for your help

[cmjohnson]

I have now been through the Dallas chip replacement process with two G90s.

Here is the best way to do it.

Get the chip here:
http://www.mouser.com/ProductDetail/Maxim-Integrated/DS1245Y-120+/?qs=0Y9aZN%252bMVCVf6XAzbZp3eg%3D%3D\

DO NOT BUY ONE OFF EBAY. YOU WILL PROBABLY GET A CHINESE FAKE THAT WILL FAIL IN THREE MONTHS.

Send the new chip along with your old chip to Craig Rounds. He will copy the data from the old chip over to the new one,
and send them both back to you.

He will charge a nominal and very reasonable fee for this service.

Alternatively Craig can also provide the new chip for you, but you would still be advised to send him your old one for copying.

[Frank D]

[saigo]

[saigo]

[CIR Engineering]

[Curt Palme]

AS Craig said, do not use those eBay chips. Counterfeit for sure.

[Curt Palme]

AS Craig said, do not use those eBay chips. Counterfeit for sure.

[cmjohnson]

If the counterfeits work at all, expect their battery to go dead in a matter of months. Those chips draw very high current compared to the authentic chip and will drain down their battery very quickly.

This is not the place to be cheaping out. Get the real deal from a real supplier, not an ebayer selling chinocrap.

[CIR Engineering]