Samsung LE40R88BDX Relay clicking and no screen

[Daryn]

Hi there hope someone can help the above tv has got the same problems as everyone else's lol. The tv wont switch on at all a friend of mine had the same problem and just replaced the two caps that were swollen. Today I bought some caps and replaced the two that were swollen on mine, there values were exactly the same as the old ones but better make. Well couldn't wait to switch the set on and it didn't work, it always happens to me lol.

What should be my next move guys ,should I replace the rest of the caps that don't seem to have anything wrong with them, I checked the solder joints on the back of the PCB but couldn't see anything bad, I did touch up a couple of them but to no avail. I did put some pics on my travel site on the banter section but didnt want to place the link on here incase its not allowed.

Any help would be most appreciated and If I can help anyone with the same hobbies as me I will try my best.

Radio Amateur and Travel Mallorca is my hobbies.

[sabre504]

Re: Samsung LE40R88BDX Relay clicking and no screen

Hi on the main board there is an ic1803 8 legged smd eeprom if this has gone it can cause the same symptoms
To be honest i changed mine but it still didnt work so ended up changing all the caps on the power supply and still no joy i found a guy who can do it but depends if you want to give it a go yourself

[sabre504]

Re: Samsung LE40R88BDX Relay clicking and no screen

On this model the eeprom in question is IC 1803 (24C256) 8 pin smd

[Daryn]

Re: Samsung LE40R88BDX Relay clicking and no screen

Thanks for the reply sabre504, its so frustrating when the cap change has worked for so many others GRRRRRRrrrrrrrrrrrr. Im hoping it is another cap that has not shown up as a blown one. Ive also read somewhere about an eprom reset but cant find it now, hoping someone can shine some light on this as well.

[Daryn]

Re: Samsung LE40R88BDX Relay clicking and no screen

So is it a just buy and replace or does it need programming. Can you gave me an idea of how much it was please. I really appreciate the help here.

[sabre504]

Re: Samsung LE40R88BDX Relay clicking and no screen

No programming required and chip cost me about £9

[sabre504]

Re: Samsung LE40R88BDX Relay clicking and no screen

The clock and data pins are pins 5 and 6 and are identifiable by the 100 ohm smd resistors connected to each of them. Fit a shorting link (on long wires) between the pins. Reassemble the chassis. Switch on and then remove the short. Bring the set out of standby. Now access the service mode as follows-
Using the remote control, switch to standby, press info, menu, mute and power. The set should start and display the service menu. Using scroll keys select item 8 and enter by scrolling right. Select "tuner" and set to auto. Revert to previous screen by pressing menu. Now scroll to "reset" and enter by scrolling right. The set will revert to standby. Power back on and tune in stations.
If you fancy trying this

[Daryn]

Re: Samsung LE40R88BDX Relay clicking and no screen

So is this on the power board or the main PCB, Im no expert and do a little radio repair so soldering etc is not a problem but Im defo no expert but would try this if its worth a go, just need to locate it.

[sabre504]

Re: Samsung LE40R88BDX Relay clicking and no screen

The chip is on the back of the main board so you have to take it off
turn it over and if memory serves it should be somewhere near the top left corner

[Daryn]

Re: Samsung LE40R88BDX Relay clicking and no screen

Tried alot of times with the resetting of the eprom, the clicking has now stopped and the tv switches on and off but still no screen, I read one guy that said it took him 25 goes, if all else fails it looks like it is a corrupt eprom.

[sabre504]

Re: Samsung LE40R88BDX Relay clicking and no screen

Worth trying a new one for the cost

[Daryn]

Re: Samsung LE40R88BDX Relay clicking and no screen

Well replaced the little eprom today and the tv sprung to life If we get any more problems Ill just replace the rest of the capacitors but fingers crossed its grafting now for good. PLEASE hehehehe.

Thanks for the info sabre504 it was a great help. My god that was a small part lol.

[shepp]

Re: Samsung LE40R88BDX Relay clicking and no screen

Well replaced the little eprom today and the tv sprung to life If we get any more problems Ill just replace the rest of the capacitors but fingers crossed its grafting now for good. PLEASE hehehehe.

Thanks for the info sabre504 it was a great help. My god that was a small part lol.

when replacing the eprom would i still have to change settings in service menu? or is this only when shorting pins 5 and 6 on the old one? ive got the same problem relay just clicking after changing caps

ive shorted the pins but then realised i havent got the damn remote!