Neon C3298DVB stuck in standby

[OHM SUPPLIES]

Re: Neon C3298DVB stuck in standby

Glad it worked and good for sticking with it.

There was a delay on the order as explained in the email. I didn't have time to read the whole thread and thought someone might of suggested trying the original order. I have now read all the thread. With these EEPROMS they're very specific to the chassis used. You can get one that works and you just need to go into service mode to sort the screen,, others will remain lifeless, stuck in stand by , pulse etc if the wrong EEPROM is used, even form a set with the same chassis and screen type.

Here are a list of MANUFACTUERS that MAKE and SELL these EEPROMS:



http://www.cypress.com/?rID=43987
http://www.atmel.com/products/memories/serial/spi.aspx
http://www.onsemi.com/PowerSolutions...do?id=CAT25256
http://www.st.com/web/catalog/mmc/FM76/CL1276

As you can see, they're all referred to as EEPROM but are different to the 24XX that are more commonly found in earlier sets. More modern sets are using SPI EEPROMS along with the 24XX , (although these would normally be found near the HDMI ports) so before shorting anything, try reading the markings on the IC and if unsure pull up the datasheet and as the info. on the eeprom suits to beign transfered over the 'tinernet, it makes good sence to ask if someone has the file and trying to program the one in the set (making sure your programmer can handle that ic)

We're finding that manufactures will use different ic's with the same cct. refs as they do the same job (probably down to price) so simply reading the markings means you might find an equivalent IC in stock and cheaper.
Hope that clears questions that have been brought up on this tread. I presume being referred to as a “rip off” was possibly misinformed comment?

Regards
Andy

[multimeter]

Re: Neon C3298DVB stuck in standby

great !glad all went well another saved from landfill !.

[flocko]

Re: Neon C3298DVB stuck in standby

Hi It works, i would like to thank multimeter for all his help, and a big thanks to Andy (ohm supplies) for opening a trade account for me and making sure i got the right chip, as you can see its all boxed up awaiting a remote and then it will be out the door, And may i add that the cost of the preprogramed ic with recorded postage and vat was about £10.

[flocko]

Re: Neon C3298DVB stuck in standby

Thanks for all your help and i will update with how it turns out.I have mailed Andy (Ohm) for the chip but i think he is having problems with his messages, if i dont get a reply today i will go to his web site and order it there Big thanks Flocko

[multimeter]

Re: Neon C3298DVB stuck in standby

dont forget yer wrist-strap !

[multimeter]

Re: Neon C3298DVB stuck in standby

Board back and in standby U6 pin 8 3.29v so it got to be the chip.So do you think it will be Ok for me to solder it in? i will give it a go, I will give Andy a message and see if he can supply the chip, any pointers for soldering the new chip do you use no clean flux or not i have a nice small iron so should be alright

confirms that other voltages are ok,3.29v is right for VCC input.

use no clean flux for removal of old chip add new solder to the pins to aid removal,

dont use a low wattage iron or you will end up lifting traces a 60w will be fine.

clean pads with alcohol .

use no clean flux,observing correct position of dot on ic designates pin 1 on the board.drop ic on the pads,tack one corner to hold ic,and away you go with the rest of the soldering.

just check with a magnifier to make sure no solder whiskers are shorting pins as it could blow the new ic,re-assemble tv,power up .

please let us know if everything works ok as it will be and aid for anyone else having the same problem and wishing to fix it.it would save people clogging up this site with topics that are duplicated,and can be found easily using the search function.,and taking up valuable space.enjoy your new tv!,hopefully!

[flocko]

Re: Neon C3298DVB stuck in standby

Board back and in standby U6 pin 8 3.29v so it got to be the chip.So do you think it will be Ok for me to solder it in? i will give it a go, I will give Andy a message and see if he can supply the chip, any pointers for soldering the new chip do you use no clean flux or not i have a nice small iron so should be alright

[flocko]

Re: Neon C3298DVB stuck in standby

X32VSIG This is from from the top of the chip it my be VS1G also maybe something
0937 under green marker paint will put board back in set later to test for v-in
Thanks for all your help Flocko

[multimeter]

Re: Neon C3298DVB stuck in standby

actually i think VCC should be pin 8,from the dot on the chip,count round anticlockwise till you get to pin 8,thats your V-IN pin,you should see about 3.6v on this pin

[multimeter]

Re: Neon C3298DVB stuck in standby

Hi I think Andy will confirm it is the u6 chip, Its in his add for the standby repair on CV109H V2.1. Sorry no scope,and the board is out of the set and on my desk can i not just check with a meter to see if the v-in pin has a supply< what pin and voltage am i looking for, all this with ESD if my iron is earthed and i am earthed even if i had to do the soldering in my pants would you not think that would be Ok. Sorry if that though put you of your tea, anyway back to you Flocko

you can get a ESD strap for a couple of quid .
you will need to check V-IN with the main board connected ,tv plugged in ,and with standby led on.
what is the part number of u6 ?

[OHM SUPPLIES]

Re: Neon C3298DVB stuck in standby

Hello,

Yes sorry, my mistake.

CV109H CHASSIS,

The spi flash/ eeprom CCT REF:

V1.2 = U7
V2.0 = u6
V2.1 = U6
V3.0 = U25

regards
Andy

[flocko]

Re: Neon C3298DVB stuck in standby

Hi I think Andy will confirm it is the u6 chip, Its in his add for the standby repair on CV109H V2.1. Sorry no scope,and the board is out of the set and on my desk can i not just check with a meter to see if the v-in pin has a supply< what pin and voltage am i looking for, all this with ESD if my iron is earthed and i am earthed even if i had to do the soldering in my pants would you not think that would be Ok. Sorry if that though put you of your tea, anyway back to you Flocko

[multimeter]

Re: Neon C3298DVB stuck in standby

would think U6 bottom right corner of the card slot has green line on it,have run the meter over the power in rails on 200ohm all reading OL thats 12v/5v/24v/ inverter on and adj

great,so we know there is no shorted rails on the main board,and the fuses confirm good on the main board.

andy is right in saying there are eeproms on the board,what you need to do is to search all the 8 pin sot-8 chips via there data sheets on the net,the one you want will be the SPI flash chip,this one creates the standby fault your having,and stores the program for switching in/out of standby and some other things.

when you find what "u"reference it is designated on the board we can go from there.

the chip is normally very close to the card reader slot going by the 24" neon model.

andy,cant remember what site i seen the chip on ,but it was def £17 + postage for the 24" version which is crazy for what it takes to program these chips if you have the programmer.

floco,do you have a scope?,it will verify if the chip is functioning ,you should see a sine wave on the pins data/clock etc.

also have a check to see if there is an input voltage going to the chip on the V-IN PIN if its there then it will be the faulty chip,if it isnt then there is another problem

[flocko]

Re: Neon C3298DVB stuck in standby

Hi Andy your message did not get though to my mail box

[OHM SUPPLIES]

Re: Neon C3298DVB stuck in standby

Oops,
Not great with forms

regards
Andy

[OHM SUPPLIES]

Re: Neon C3298DVB stuck in standby

You can electrically erase and program this read only memory, However eeprom is a very general term that doesn't really fit this ic. It's normally referred to as the eeprom as it's dos the job that a “normal” (24 x xx eeprom would do) also there are several eeproms on the board each doing their own job. If you call it the SPI flash, its correct but you start getting bogged down in terminology Please follow the link which explains a bit better:
http://www.atmel.com/products/memories/serial/spi.aspx
The file in U7 contains a program but also stores the channels etc.
On the 24X xx eeproms, although shorting can bring the set round, also fitting a blank, you can get other faults such as HDPC fail and a preprogramed ic will solve this.
The ic's are also not £17.00 each
Regards
Andy

[flocko]

Re: Neon C3298DVB stuck in standby

would think U6 bottom right corner of the card slot has green line on it,have run the meter over the power in rails on 200ohm all reading OL thats 12v/5v/24v/ inverter on and adj

[multimeter]

Re: Neon C3298DVB stuck in standby

photo of CV109H V2.1 have checked fuse and am now checking voltage rails will tell you if i find anything

where is the location of the flash chip?,it should be marked winbond 24c****,cant quite see properly in the pic,and should be a sot-8 package 8pin chip

[flocko]

Re: Neon C3298DVB stuck in standby

photo of CV109H V2.1 have checked fuse and am now checking voltage rails will tell you if i find anything

[OHM SUPPLIES]

Re: Neon C3298DVB stuck in standby

Hello,
I've replied to your message.

regards
Andy