Philips 43PUT4900/12 Stuck in Colour Test

[Billsy]

Happy Christmas to those that celebrate.

Can anyone help me with this one please?
I have a Philips 43PUT4900/12 that is stuck in a colour test mode. When powered on, it cycles between red - green - blue - black - white.

I've tried the following from the service manual which didn't work:

How to Exit SDM
• Switch the set to Stand-by, by pressing the standby button
on the remote control transmitter or on the television set.
• Via a standard customer RC-transmitter: key
in “00”-sequence.

Here's the service manual:
https://elektrotanya.com/philips_tpn.../download.html

Many thanks

[zomi]

Re: Philips 43PUT4900/12 Stuck in Colour Test

Bad main board ?
try a replacment mainboard

[ducky29]

Re: Philips 43PUT4900/12 Stuck in Colour Test

Try a firmware update from the philips website

[Billsy]

Re: Philips 43PUT4900/12 Stuck in Colour Test

Ok just tried a software update and it wouldn't run, just continues cycling colours. I'll probably just order a new board next week.
Thanks

[nomoresonys]

Re: Philips 43PUT4900/12 Stuck in Colour Test

May not work but sometimes the update dont work on first try.

[ducky29]

Re: Philips 43PUT4900/12 Stuck in Colour Test

Change the extension to pkg and retry

[Billsy]

Re: Philips 43PUT4900/12 Stuck in Colour Test

PKG didn't work either. I tried both extensions a few times.

Thanks

[nomoresonys]

Re: Philips 43PUT4900/12 Stuck in Colour Test

This might be your board, probably need to match up the numbers on the white sticker with your sticker. https://www.ebay.co.uk/itm/Phillips-...0cM:rk:13:pf:0

[nomoresonys]

Re: Philips 43PUT4900/12 Stuck in Colour Test

PKG didn't work either. I tried both extensions a few times.

Thanks

Maybe try a different usb stick?

[nomoresonys]

Re: Philips 43PUT4900/12 Stuck in Colour Test

Update procedure here. https://www.youtube.com/watch?v=IwKt1n8QWOI

[zomi]

Re: Philips 43PUT4900/12 Stuck in Colour Test

https://tinyurl.com/y854esv7

that one is for the 43" £23

[nomoresonys]

Re: Philips 43PUT4900/12 Stuck in Colour Test

So whats the difference in those 2 boards, besides 3 pounds?

[Diah]

Re: Philips 43PUT4900/12 Stuck in Colour Test

on the main boards you have 2 points listed as SDM, make them short ans start the tv, then turn yours tv out, release the short you did before.. itmay help to bring the eeprom out from sdm mode

[nomoresonys]

Re: Philips 43PUT4900/12 Stuck in Colour Test

So whats the difference in those 2 boards, besides 3 pounds?

Ok, I see where the one I posted says 49, might want to go with the 43 to be safe, not sure if they interchange.

[Billsy]

Re: Philips 43PUT4900/12 Stuck in Colour Test

Diah, I can't find the SDM pads on the main board. Any idea where they are?

Thanks for all the help everyone.

[Diah]

Re: Philips 43PUT4900/12 Stuck in Colour Test

..

your picture not clear. did you check the downside oh MB. if this set didn't listed SDM or SAM or CSM on MB, you still have service port CN410 , use USB to TTL 3.3V the middle are ground and other tow RX and TX , with command you can do allot..also this set with MT chip, on xda developer there are MT tools to play around this MT chip

[Davi.p]

Re: Philips 43PUT4900/12 Stuck in Colour Test

Hi, if this "Burning mode" is come on for a settings memory problem (maybe a transient at input) then try to reset it, the modes vary, the simplest way is to try to short circ. the eeprom chip at pins 5,6 when you plug power cord, wait 5 sec then release, first you have to locate it, its the bigger eeprom in capacity size, always a 8 pin ic, this method don't always work, probably there are other combinations like pulling high SCL or SDA or both pins (5 & 6) i.e. SCL+VCC, SDA+VCC or SCL+SDA+VCC at the power cord plug in. The other method to buy a cheap CH341A programmer with clip and erase the chip then power on tv. Sometimes the default eeprom content can be extracted from the update file unless it is compressed, but needs a little study. Last, i don't think entering SDM mode can vary the defect..