Neon C3298DVB stuck in standby

[flocko]

Re: Neon C3298DVB stuck in standby

Will do

[multimeter]

Re: Neon C3298DVB stuck in standby

I dont have ESD safe iron and ground strap, you must know whats coming next where are you as you sound like the man for the job,if i get the part and send the board would you do the repair i will pay you for your time. Flocko

can you post up a pic of the main board first?,just so i can see and look for anything obvious i.e fuses etc

also to do a check to ground resistance readings of the voltage rails for shorts

[flocko]

Re: Neon C3298DVB stuck in standby

I dont have ESD safe iron and ground strap, you must know whats coming next where are you as you sound like the man for the job,if i get the part and send the board would you do the repair i will pay you for your time. Flocko

[multimeter]

Re: Neon C3298DVB stuck in standby

Thanks multimeter have you used these before and do they work? i did message Ohm about it but still waiting for reply.

no i havent used them,i prefer to re-program my own chips,.
i always replace the chip with a new one ,some you cant re-write beacause of the write protect pin,but most programmers can override this problem anyhow.
always weary about pre-programmed chips some turn up blank possibly due to ESD handling etc .always use a ESD safe iron and ground strap on your wrist when installing them,they are quite sensitive to ESD

[flocko]

Re: Neon C3298DVB stuck in standby

Thanks multimeter have you used these before and do they work? i did message Ohm about it but still waiting for reply.

[multimeter]

Re: Neon C3298DVB stuck in standby

Sorry should have put that in CV109H V2.1 Thanks Multimeter I have to pop out for a bit but will be back soon Flocko

the part you need is this one

http://www.chsinteractive.co.uk/elec...x32vs-neon.htm

bit cheaper than the c24 series ,still pricy though

[flocko]

Re: Neon C3298DVB stuck in standby

Sorry should have put that in CV109H V2.1 Thanks Multimeter I have to pop out for a bit but will be back soon Flocko

[multimeter]

Re: Neon C3298DVB stuck in standby

Forgot to say i think this is just a rebadge of the Neon C3298DVB But this has the Megmeet mlt666T power board every thing else is the same. Tom, Multimeter, Ohm, i need your help please to sort this Thanks

what is the main board part number? CV106 ETC?

[flocko]

Re: Neon C3298DVB stuck in standby

Forgot to say i think this is just a rebadge of the Neon C3298DVB But this has the Megmeet mlt666T power board every thing else is the same. Tom, Multimeter, Ohm, i need your help please to sort this Thanks

[flocko]

Re: Neon C3298DVB stuck in standby

Hi I have just today got a soundwave C3298f stuck in standby.have checked it by disconnecting the Av board from the power board and with a resistor between 5v s/by and ps/on all the voltages come up,so i am thinking it could be the flash chip/ eeprom,could this be wiped and reprogramed,or is a new reprogramed chip needed.The other problem is i have no remote.

[multimeter]

Re: Neon C3298DVB stuck in standby

Ah I've probably uploaded it already. I'll see if I can find any other .BINs.

there might be a chance that the c2469f .BIN file MIGHT work on the larger 32" model,by going into service menu and changing the screen size.

i dont have a 32" model at the moment,one may come up soon,be interesting to see if it will work

[tom66]

Re: Neon C3298DVB stuck in standby

tom i sent the .BIN file to you a while back for the c2469f model,about 4 months ago i think.

i dont have the BIN file for the c3298dvb model as yet but still looking !

Ah I've probably uploaded it already. I'll see if I can find any other .BINs.

[multimeter]

Re: Neon C3298DVB stuck in standby

Yeah -- if I could get hold of the firmware, I would both upload them onto the internet for all to download, and I would sell chips for a nominal price. LOL, not 17 quid. multimeter, do you think you could send me a copy of that file to upload to tgohome.com/ServiceManuals?

tom i sent the .BIN file to you a while back for the c2469f model,about 4 months ago i think.

i dont have the BIN file for the c3298dvb model as yet but still looking !

[tom66]

Re: Neon C3298DVB stuck in standby

Yeah -- if I could get hold of the firmware, I would both upload them onto the internet for all to download, and I would sell chips for a nominal price. LOL, not 17 quid. multimeter, do you think you could send me a copy of that file to upload to tgohome.com/ServiceManuals?

[multimeter]

Re: Neon C3298DVB stuck in standby

tom is right,they are serial flash chips,the same on the neon c2469f model (location u7),i did before think they were a eeprom but i was wrong.

there is someone selling them somewhere cant remember who,but is asking about 17 odd pounds for them plus postage etc !,bit of a rip off really.

ive got a load of winbond 24*32 chips coming from china and plan to program these,so if any one wants one for the 24" version let me know,i succesfully programed a new one i had with the firmware,tv fires up no problems. will prob just flog them for a fiver each ,lots better than 17 quid!

i will also do the c3298dvb series too when i get the firmware

[tom66]

Re: Neon C3298DVB stuck in standby

I'll repeat. It's not an EEPROM. An EEPROM is a low density, byte-programmable device. A serial flash is only page programmable (down to nearest 512 byte or 4Kbyte typically.) Which means it's difficult to use it to store settings (to change one byte you must erase full page, then write back the page with the changed byte.) I learned this the hard way with a project of mine.

EEPROMs are typically used to store the user configurations like channels, previous input used, input labels, last settings etc. as well as service settings like panel make/model, hours used, region, etc. Serial flashes are typically used to store firmware (the TV's software.) The processor is dead without firmware. The firmware is the software for the TV - interface, processing, etc.

Sometimes the firmware can be fixed to e.g. having a DVD player or a certain panel. Other times it is generic across all models and the EEPROM changes those settings.

The 5-6 jump trick I know of only works on some older Samsung models -- it's probably a mere coincidence that tricks the microprocessor into booting. It's not directly erasing the EEPROM, though. When the TV sees the EEPROM cannot be read, it loads it with default values.

[OHM SUPPLIES]

Re: Neon C3298DVB stuck in standby

Hello,

By shorting out pins 5 and 6 (clock and data) you are trying to blank the eeprom. On some designs of board, the micro will re-write this on switch on, on some the info. in the eeprom is needed for the set to work.
The ic is an eeprom, which is a very broad term, but has a different pin out than a 24cxx etc. The program contained in these is very specific to each model, so replacing it with the correct type is the best way to repair the set.

regards
Andy

[tom66]

Re: Neon C3298DVB stuck in standby

It is not an EEPROM. It is a serial flash for firmware.

On this device a 5-6 jump would not work because the idea behind jumpering 5-6 is that it will cause the micro to ignore the eeprom and go to default values.

Due to a lack of pull ups, 5-6 on this device would likely damage the processor due to excessive output current if continued for too long. The flash device itself would likely survive.

[OHM SUPPLIES]

Re: Neon C3298DVB stuck in standby

Hello,
Im a new member but I’d like to interject. Please do not short pins 5 & 6 out on Eeproms, espachally this type. (25x32v) unless you are aware of what you’re trying to do. On this IC it won’t work but will probably corrupt any info. in the ic (unless you know that the ic is already corrupted). A replacement ic would be a preferred option meaning you don’t have to buy the main board.
Regards
Andy

[tom66]

Re: Neon C3298DVB stuck in standby

Neon isn't Vestel.

Doesn't mean they are any good though!

If I were keeping it I would re-cap the PSU.