LG 37LC 46 problems

[supersparks]

hi all i have one of the above sets and it is struggling to boot up from standby, i have been told that is proboably the electrolitic capacitors degrading, i really need to know if this is the case and if so which ones do i replace and how do i make sure i am buying the correct ones as i have no way of knowing the specs of the originals with regards to the ripple current and tolerances etc. the main power board is a EAY34796801 REV1.0. thanks, mick.

[obagama]

Hi, The capacitors you need are all forsale at Maplins for 50p if you in the UK,

Just replace with the same ones as they are on the boards or slightly higher voltage (ie 2200uf 10v for 2200uf 16v).

I would recommend changing the following which is next to the connectors to the av board.

C202  which is 2200uf 16v
C210  which is 1000uf 35v
C208  which is 1000uf 35v
C206  which is 2200uf 35v
C221  which is 470uf 25v
C222  which is 470uf 25v
C226  which is 470uf 25v
C215  which is 47uf 50v
C218  which is 2200uf 16v
C217  which is 2200uf 16v

Hope this helps

[supersparks]

thanks for the speedy reply, the wife is doing my nut in as she had to watch the x factor in the bedroom.I now know which ones to replace but electronics are not my thing i am an electrician by trade , on the specs for the capacitors it lists differet values of ripple curent what is that all about. thanks, mick.

[lil paul]

if all else fails >> EAY34796801 (Brand New Part)
£81.25  pic avalible >>

http://shop.sjstv.co.uk/eay34796801-brand-new-part-1614-p.asp

[ozzietech]

Disregard ripple current Mick, only values needed are the uF and voltage. Be aware that if the caps are tightly packed they may use slimline caps which are thinner and taller than standard caps.

[sparky]

hi
if you  have a go make sure you check the main
smothing cap is discharged
dave

[ozzietech]

Oh and make sure you get the polarity right, they go bang if you don't.

[supersparks]

ok went ahead ordered some capacitors fitted them and it boots up from standby first time (can anybody sense a but coming here), but i now have no sound 

[davenjax]

hi had a similar problem with a 32" lg i had no sound then no pic .changed the psu and problem cleared id say you have another faulty component on your psu .rgds dave

[supersparks]

do you think i need to do the main board mods that i keep seeing posts about.

[supersparks]

 anybody somebody shall i spend my hard earned on a new psu board or should i try the main board mods first.

[davenjax]

mate id be checking ebay for a psu first try the247enigma on ebay iv bought boards from him never had an issue .with my last lg i replaced the main board and the problem remained i changed the psu and the fault cleared good luck hope it works out.dave

[supersparks]

happy new year all ,to update i bought a new psu board  and still no sound (oh bugger)so i read the article about the main board mods and got slightly confused. do i only do the mods that give the symptoms "no sound" or do i do them all,and when the text reads L1405 delete,R1475 0 ohm add or short. does this imply remove the ceratech from the board  then turn the board over and add a solder link to point R1475 to give a 0 ohm short. thanks ,mick.