LG LCD TV NO:LG42LD420 POWER CIRUIT BOARD HAS BEEN BURN OUT PLZ HELP ME TO FIND IT
Send a email to [email protected] include your model number and what board your needing. I am pretty sure they either have one available or they can get one quickly.
SOURCE: Maxent 26" lcd tv, shorted circuit board
the best and easiest way to track down a short is with a digital multimeter just check for continuity throughout the circuits.If you you cannot get your hands on a multimeter use a compass.It will detect and move left to right when there is a complete circuit and as soon as you hit the short the needle will be dead still. Fix the short and test.It would probably be alot cheaper than trying to track down a part with no certainty of it.Hope this helps
SOURCE: Protron LCD TV Circuit board
Just posted this elsewhere:
I checked and found the Protron name belong(s) or (ed) to Spectroniq and neither of the two websites are up anymore.
Also, I could probably make a zapped supply work again but you do not know what might have been damaged downstream from it and that is a good possibility; the damage may be much deeper than it appears since many of the integrated circuits used in modern equipment don't tolerate hundred (or thousand) volt spikes and without a working supply, there is little chance of diagnosing it unless a service department has a few lab-type power supplies and can simulate the failed original supply.
If you do find anyone who has stock on assemblies for this TV, you may find more than one part number on the board. If it is a number that seems to be under clear lacquer, it is likely only the bare board number. If it seems to be stamped on or has a label with a number on it, this is going to be the whole part number for the 'stuffed' board.
I can't help you with this one but I would suggest, especially if you live in a lightning-prone area to consider installing a 'whole house' surge protector. They do cost a couple of hundred US dollars plus installation charges, but the established companies even include an insurance policy that covers $10,000-25,000 in damages. If you own your home, it's your decision and I cannot imagine any landlord would object to having you install one at your own expense.
SOURCE: need circuit diagram for bush
Diagrams i am sure as you know are not always easy to come by, at least for free. I see that there are available boards online and a company that will rebuild this model of power board for you in UK. ohmsupplies.co.uk is where it is at. looks like $80
SOURCE: Philips LCD TV 37PF5520D/10. TV will not switch on.
philips has a problem with bad caps(swollen)in power supply-try shopjimmys.com enter model number-scroll down til you find power supply-order it simple to put in.if they do not have it write down part number then google it to find one--you also can change the bad caps yuorself if you are handy with a soldering iron
SOURCE: My 5 yr old Sansung
Try here: http://www.shopjimmy.com/tvs/samsung-bn44-00134a-power-supply.htm
Or Google BN44-00134A:
http://www.google.com/search?sourceid=navclient&aq=hts&oq=&ie=UTF-8&rlz=1T4GGIH_enUS282US283&q=BN44-00134A
Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.
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