Riddled TV Repair Forum

grumpy · Joined: 01 Mar 2012 Posts: 1 Location: manchester

first off..can i say hello all

so iv joined here to ask/seek help with my doughters tv its a = akai lm-h30cjsa , its got a problem.

so here goes, when she plugs it in. all she gets is the power led flashes green on then off and on then off and so on, it does not fire up. can any one advise please ? Question

thanks paul

Google

Davy · Joined: 04 Mar 2012 Posts: 12

Probably a supply failure at a guess, what we may be seeing is an error code.

Count the number of flashes between each period or break ie, on/off/on/off pause thus repeating itself, you'll probably find it flashes a constant number of times between each pause. The number of flashes is the error code for that particular chassis.

One common problem is faulty electrolytic capacitors, these may be seen as leaking gunge or bulging tops that resemble a dome, the tops should be nice and flat!

If ever you repair this yourself, DO discharge the main smoothing capacitor first, you can either use a resistor say around 1K ohms 1 Watt or more... or use a small mains household incandescent bulb... 115v, 240V which ever part of the globe you are in as various countries use different house voltages, leave them across the capacitor for about a minute.

For this job I use a sewing machine bulb rated at about 240V 25Watt.

A whack from one of these capacitors is very unpleasant and could prove fatal

Replacement capacitors should always be low ESR 105 deg C. minimum temperature rated types - do not use standard types. These are polarised so be sure to fit them the correct way round!

Dave