Hyundai HPT-4240 42"Plasma tv

This type of problem can be either in the display panel itself, or the matrix processing. The service centre will do board swapping to fix the problem. They don't fix these at the component level, unless the fault is very simple. If the fault is in the display itself, then the cost of servicing would be not feasible. After the board swap, there may be some adjustments do be done.

You should find out who the authorized service rep for your TV set is, and let them do a proper estimate for you.

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JANA _____

The band starts roughly eleven and a half inches from the left hand side of the screen and obviously blocks out any image behind it.I have the screen wall mounted and it is not near any kind of heat source. I have a sky box connected to it and have also replaced the box with another box that i have upstairs connected to a small tv in my room.

Can someone give me any ideas or solution? Help!

Bluenose41.

no component level debugging and repairs?, in other words, they're garage mechanics working on the ignition system in the dark!

Hi,

Did you ever get any suggestions?

I've got a Hyundai hpt-4240? plasma screen TV. It's turning on, and you hear it click go to power up, the light goes green, then it kills power to the screen and the light goes red and stays on.

I'm getting no sound either, makes me wonder if it's a power supply problem perhaps?

Any ideas/info greatly appreciated.

Elmo

Hi! I am hoping somone can help me with a problem that I am having with my Hyundai 42" Plasma TV, Model no. HPT-4240.

This might just help ya !!!.

-- Best Regards

Mark

Elmo, this is due to the power supply shutting down after detecting abnormality in the output voltages.It takes about 6/7 seconds after going Green to shut down.

You need to put a meter on the VS supply and measure for approx 190Volts DC while the Green light is on. Chances are this supply will not be present.

There's currently a replacement board up on UK Ebay at the moment (Item number: 330124441705), alternatively your old board could be repaired.

With regards the black vertical band problem, i have found that the best way to check this is to place a multimeter, switched to low ohms range across the four 10 ohm resistors which are on the flexible cable which is bonded to the plasma panel (you have to remove the metal bracket and cable from its connector as shown in the article mentioned previously

You should read 10 ohms or thereabouts if you are lucky and then just do a continuity check between the resistors and the connector strip. If you are unlucky, like my last repair job , you will geta high reading (5k in my case) which means the black driver chip which is bonded to the flexi connector is defective and the panel is basically junk.

Regards

Graham

Quite likely. For example, I'm fixing a colleague's LGE42V5 42" plasma panel, same symptoms.

It uses the DGK-420W power supply (which I believe is used by various plasma sellers.) There's a green LED on this PSU board which blinks (1 long and 6(?) short blinks, repeating) when the Vs supply fails. This PSU is known for blowing the blue 1uF 630V capacitors in the Vs section, they appear to be driven pretty hard with full load power through them. One capacitor is entirely open circuit on mine (and slightly bulged when examined after removal).

Mike.