samsung le40m86bd

[t1412]

hi fella's happy xmas to all, samsung le40m86bd kept swiching off and on replace the usual caps changed epprom went into service mode did a reset, tv comes on ok runs ok for 10 to 20 minutes then the  picture freeze's then clicks off and back on again now if connect a freeview box  through scart lead tv runs ok  would you say the tuner is causing the trouble thanks for your time

shaun     

[cheeky2]

I had a le46m87bd (very similar board) doing something similar it just kept intermittently turning itself off and on! Reset the eeprom a few times and changed a couple of the solid state 1000uf 6.3V(might be slightly higher voltage) under the soldered screen. Resolved the issue after service reset a few times! The caps were a little high esr 0.5 ohms but not gone. These capacitors on this board get really hot which is quite surprising which i guess why they go quite often.
Good luck :)

[t1412]

hi cheeky the metal casing is this dtv part on the main board your refering to and the smd caps thanks for the info much apprciated

shaun

[cheeky2]

They are 10V 1000uf see attached picture i have removed them before from a faulty same board that have also a couple of them to the left of the screen. You will need a decent soldering iron to remove them as the pads on them are quite large ( in fact i lifted one of the pads when taking them out).
Good luck

[t1412]

hi thanks for the info again, the smd you can snap them off and use electrolytics caps, if you have the room, more reliable. thanks

shaun 

   

[cheeky2]

 
Just heard from the customer that it hasn't resolved issue !!
 I ran it for around 14 hours without an issue