Neon C3298DVB stuck in standby

[sienoki]

Re: Neon C3298DVB stuck in standby

Great, it's now fixed?

Its vestel inside so probably not for long..will just sell it on now & probably get what ive got in it bk

[tom66]

Re: Neon C3298DVB stuck in standby

Great, it's now fixed?

[sienoki]

Re: Neon C3298DVB stuck in standby

Try this

Select TV mode
Press Menu or LCD Menu
Enter 1147
Press Menu or LCD Menu (optional)

Source 2580 was the correct code..it had 2 be done when the tv was on & not in standby doh!..when in there i turned TI MODE off in the function section & all is good

[tom66]

Re: Neon C3298DVB stuck in standby

Try this

Select TV mode
Press Menu or LCD Menu
Enter 1147
Press Menu or LCD Menu (optional)

[sienoki]

Re: Neon C3298DVB stuck in standby

Im off 2 farnells tommoz 2 stock up on bits carnt i just get a 12.000mhz quartz crystal 1s used for IC & microprocessors Order Code:9712950 from farnells..they only cheap & easy 2 install..thx

Tom scoped this mainboard 4 me & found the new epprom wasnt working proper..so i probably got ripped off with a blank 1..anyways ive ordered another mainboard from EMOs..installed it & she fired right upBUT the mainbord must have been configured with a different panel..mines a samsung panel..my problem is i cant access service mode 2 see if i can change any panel settings..ive tried source 2580 but 2 no avail
This is the remote i got with the set & looking on ebay its saying its an original so im stumped..thx

[sienoki]

Re: Neon C3298DVB stuck in standby

Ok fella catch up with u when u settled in..im stuck with this set now as i dont want to spend much more on it..thx
If u help me i give u free bus travel

Im off 2 farnells tommoz 2 stock up on bits carnt i just get a 12.000mhz quartz crystal 1s used for IC & microprocessors Order Code:9712950 from farnells..they only cheap & easy 2 install..thx

[sienoki]

Re: Neon C3298DVB stuck in standby

You would need a scope to debug the crystal. I'm in Uni from late September but you'll have to give me a couple of weeks to get settled. If you have any troublesome TVs left, let me know.

Ok fella catch up with u when u settled in..im stuck with this set now as i dont want to spend much more on it..thx
If u help me i give u free bus travel

[tom66]

Re: Neon C3298DVB stuck in standby

You would need a scope to debug the crystal. I'm in Uni from late September but you'll have to give me a couple of weeks to get settled. If you have any troublesome TVs left, let me know.

[sienoki]

Re: Neon C3298DVB stuck in standby

Fuse tested ok..do i black probe screw chassis n red probe power i pins on mainboard on continuity setting?
Took the shield off & cant seem to find any info on the ic..thx

What type of cystal is this as im gonna replace it & not sure what to get..thx
https://www.badcaps.net/forum/attach...5&d=1345298168

[sienoki]

Re: Neon C3298DVB stuck in standby

Took readings of the vdo,s in pic 3 post45 the 1s closest to the power pins & only got the correct voltages with the jumper in..so can i rule them 4 vdos out?
All the vdos give correct voltages with only the jumper pin inplace

So could the fault perhaps be something with the 2 5vins with only having 0.28..so something on them rails?https://www.badcaps.net/forum/attach...6&d=1345298168

[sienoki]

Re: Neon C3298DVB stuck in standby

I jumped them pins with nowt connected 2 mainboard & 12v/24v appeared..sorry 4 not doing correct 1st time..some pics of mainboard..if you need underside let me know..theres no smd devices on the underside..thx

Took readings of the vdo,s in pic 3 post45 the 1s closest to the power pins & only got the correct voltages with the jumper in..so can i rule them 4 vdos out?
All the vdos give correct voltages with only the jumper pin inplace

[sienoki]

Re: Neon C3298DVB stuck in standby

Fuse tested ok..do i black probe screw chassis n red probe power i pins on mainboard on continuity setting?
Took the shield off & cant seem to find any info on the ic..thx

Took 20k setting readings on the power in pins & the 2 5vins pins were a reading of 0.28..the others were high..this was done with nothing plugged into the mainboard nothing jumpered & not switched on..thx

[multimeter]

Re: Neon C3298DVB stuck in standby

by the way did you follow the steps in post#46 about resistance testing on the disconnected main board?if you havent...

set your meter to 20k,black probe to chassis screw,red probe to each individual line voltage pin (no need to do the ground pins),coming into the main board from the psu,the readings should be very high resistance anything around 30ohms indicates a short on that rail.

the main board has a short somewhere that is shutting the psu down,confirmed by jumping the pins as you did with nothing connected,if you find the rail thats shorted,you can trace along and check components along the trace thats affected,(leakseeker would be good for this)

[multimeter]

Re: Neon C3298DVB stuck in standby

Got the heatsink off
MSD106CL-LF-Z1
A6MFN29J
0933B

ok,cant find any info on this chip no datasheet,would have been good to find VCC to at least see if the chip is getting its voltage,if you have a scope ,we could see if the crystal is working,it should show a stable sine wave.very rare these fail though.

there are a couple of voltage regulators on this board,prefixed "bm" you could check those and see if they are working,but if they work through the main cpu they may not activate until the cpu sends the correct signal.

the voltages you had taken are correct and within spec,you can rule out the psu.

hopefullly someone might pipe in and show a link to a datasheet for the chip.but i cant find one.

if no joy i would keep an eye out for a mainboard on ebay or elsewhere you may get lucky

[sienoki]

Re: Neon C3298DVB stuck in standby

on u6 the flash chip you replaced,did you not use flux(no clean)?,those pins look a bit shaky,id have a check for continuity on each pin,find a nearby solder pad that connects to each pin and check they have continuity,do for every pin.pin 7 dosent look like its on its pad properly,or its the picture,not sure.

Got the heatsink off
MSD106CL-LF-Z1
A6MFN29J
0933B

[tom66]

Re: Neon C3298DVB stuck in standby

I dont think this board is repairable & it dont look like theres 1 about at the moment..the screen is a samsung LTA320AP02..will this screen be compatible with most 32" lcds?

Only with TVs using Samsung panels.

[sienoki]

Re: Neon C3298DVB stuck in standby

Cant get that heat sink off its stuck solid

I dont think this board is repairable & it dont look like theres 1 about at the moment..the screen is a samsung LTA320AP02..will this screen be compatible with most 32" lcds?

[sienoki]

Re: Neon C3298DVB stuck in standby

Hey up fella..thx again for sticking by me..with the jumper pin in place & everything connected up & switched on i get
5.09v
5.09v
5.09v
5.09v
12.07v
12.07v
on the main power pins from the mainboard
I used non clean flux for the eeprom..i looked over chip with jewellers eye n they look fine..it looks better under scope..gonna do them other readings now..thx

Cant get that heat sink off its stuck solid

[sienoki]

Re: Neon C3298DVB stuck in standby

on u6 the flash chip you replaced,did you not use flux(no clean)?,those pins look a bit shaky,id have a check for continuity on each pin,find a nearby solder pad that connects to each pin and check they have continuity,do for every pin.pin 7 dosent look like its on its pad properly,or its the picture,not sure.

Hey up fella..thx again for sticking by me..with the jumper pin in place & everything connected up & switched on i get
5.09v
5.09v
5.09v
5.09v
12.07v
12.07v
on the main power pins from the mainboard
I used non clean flux for the eeprom..i looked over chip with jewellers eye n they look fine..it looks better under scope..gonna do them other readings now..thx

[multimeter]

Re: Neon C3298DVB stuck in standby

on u6 the flash chip you replaced,did you not use flux(no clean)?,those pins look a bit shaky,id have a check for continuity on each pin,find a nearby solder pad that connects to each pin and check they have continuity,do for every pin.pin 7 dosent look like its on its pad properly,or its the picture,not sure.