20 Most Recent Hyundai ImageQuest HQP421SR 42 in. HD-Ready Plasma Television Questions & Answers

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Hyundai... | Answered on Sep 02, 2017

Where are you from? Without knowing it, how can one point out the authorized service center for Hyundai, near you?

Hyundai... | Answered on Oct 30, 2013

You have a failed sustain board (probably YSUS) and/or failed buffer board.

I don't know where you are, but here in the States this TV is not popular at all and I can't help you better without having you pull out the YSUS board and seeing its model number. Should start with LJ92 or LJ44.

Here's a quick guide on what are you looking for:

The picture is just a guide...your TV will look slightly different, but the essential components will still be there at the same places and still do the same functions, only they'll look different.

Hope this helps.

Hyundai... | Answered on Aug 28, 2012

well you should call a sky installer

Hyundai... | Answered on Aug 21, 2011

Better get assistance from the authorized service center. Before that, check whether you have pressed the mute switch!

Hyundai... | Answered on Apr 22, 2010


Yes I had the same problem, but mine was also video too.
I have worked on these tvs before and found the problem is with the CPU card.
You will need to have fixed or replaced.

Good luck


Hyundai... | Answered on Nov 17, 2008

went on to currys web site www.thetechguys.com were my mate bought tv from and down load manual from there very good site if any ones lost manuals

Hyundai... | Answered on Sep 05, 2008

i've just bought this one for my broken remote control
» http://www.htelephones.co.uk/#hyundai

Hyundai... | Answered on Jul 30, 2008

Hi gomaniac,
May i know how your plasma tv fuzzy as? Can you provide the photo to easily us measure it? May be you can go here to let me know which type of display problem are you appear?

Hyundai... | Answered on Jun 22, 2008

And your question is ....................................

Hyundai... | Answered on Dec 21, 2020

Yes this model seen in image

Hyundai... | Answered on Dec 09, 2020

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