Samsung LE40R87BD LCD TV - relay clicking repeatedly but wont start

[Contrast John]

Hi all
Thought this was going to be an easy one, but after replacing the domed and split electrolytics on the 5 volt line (power board) I was left with exactly the same symptom - relay clicking continuously at about 10 second intervals but the set not starting. While the relay is energised all voltages marked on the psu output socket are present and correct. Suspect some damage further downstream on the signals panel, possibly a damaged regulator or corrupt eprom. Has anyone encountered this situation before, or does anyone have a service manual / schematics for this model. Any advice would be much appreciated.
Thanks
John.

[RBelectronics]

try to disable lvds connector.maybe electronics of panel broken

[tv john]

Hi John, I'm quiet today and found some vague info.Go to the sm eeprom ic that sits near the LVDS plug on main pcb.Short the data & clock pins (?) on this ic,switch on and when relay clicks remove short.
 Tv should come on,enter service mode(sorry no info),set tuner to auto & select reset.
Thats all the info I have and never had to test it out.

Best of luck  tv john.

[Contrast John]

Hi RB and John
Have tried disconnecting the LVDS cable but the fault remained the same. Cant see any signs of stress on any board. The eeprom reset sounds interesting and suggests someone has been this way before.Will try it and keep you posted.
Thank you both for your input.
John.

[Contrast John]

Hi John and RB
Set now up and running. It was a case of a corrupted eeprom. Thanks John for the info.
For anyone with the same problem the procedure is as follows.
On this model the eeprom in question is IC 1803 (24C256) 8 pin smd and is located on the underside of the main board near the common interface. 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.                                          Thanks again tv john for the information.

John.

[Contrast John]

Footnote
Noticed when switching between analogue and digital tv, the video signal didnt mute ( unsightly hash on screen). Had to go back into option 8 and set the video mute time. Found 5 seconds about right (it had reverted to 0 secs). All ok now.
John.

[sparky]

Hi
Have got same fault replaced caps in psu  bulging still clicking did reset as you wrote
came out of standby tried opion 8 still no anolgue or digital, works via scart skt
when going on to standby starts clicking again have to reset chipto get tv out of standby
 Do you think eeprom chip faulty
Sparky

[Contrast John]

Hi Sparky
Seems that the problem is related to the eeprom IC. Might be worth checking all other options and settings with the correct service manual. When I repaired mine I noticed some other values in option 8 appeared corrupted and were not as suggested in the manual I have (LE32M86), although it gave me just enough information to get the set going again. Think you may need to check everything though and not just option 8. I noted there are some Hotel Mode settings in the manual I have and also power up settings. If everything checks out the Eeprom is probably faulty. Hope this info is of some help.
Good Luck
John.

[sparky]

Morning John:
Thanks for getting back will try and get service manual
 and check the setting of eeprom ic etc
Sparky

[adm2007]

changed caps in power supply was still clicking reset eprom and follwed advice above .set comes on but no tuning ,got manual but seems different to model. model no le40r88bdx/xeu any one got option info for this model (bord plus) thanks carl

[DesperateHousewives]

I love this brand!

[chips01]

Hey all

Am not very technically minded here and reading some posts on here confuses the hell outta me, but I have a similar problem with this relay thing although after about 10-15 seconds the tv set will come on and is fine from then onwards, I have noticed now tho that it has started to get a little worse if the tv has been turned off for a while where it never used to.

Only had it for 2 years and am annoyed that its going on, Samsung dont seem too bothered by any of this and the guys they referred me to want around £100 plus parts to fix it.

[Contrast John]

Hi chips01
With a bit of luck you will just need to replace the 1000Mf electrolytic capacitors on the 5volt line. These components are located in the corner of the power board. Often they will have domed tops indicating their stress. If left unrepaired the set will eventually fail to start and there is also the risk of a corrupted or damaged eeprom IC. See also other posts on this site relating to similar Samsung models.
Regards
John.

[chips01]

Hi Contrast john

I have had a look at loads of forums with others having similar problems and there was a diagram on there regarding the capacitors, I have taken the back off and looked and they all seem fine i.e no bulging or leakage.  Regarding the eeprom IC, I have no idea what you are on about lol.

Updated

Ok have taken back off again and looked closer and there are 3 capacitors that are bulging slightly on the top, gonna go down this route and get them replaced, just need to find someone that can solder now lol

[chips01]

Hi Sparky

This is only pic i took while the back was off.