Plasma very strange problem (clicking when brightness is turned up)

littlejon · 08-08-12, 07:07 AM

Hay people, well after spending day's trying to figure this out I just can't seem to find an answer.

My TV is a 5 years old Hitachi PD5200 at first I thought it might be a PSU problem as these TV are know to have on, having checked all the CAPS and gave it a good look over every thing seems fine, TV works perfect no problems starting, sounds good BUT from time to time (well a lot) it makes a clicking noise, this gets worse when I turn the brightness setting up mainly.

I have noticed when I turn all the setting for the colour down the clicking stops. The noise is coming from the PSU board from what I understand it's some sort of protection relay that's making the clicking noise (something like that).

I really have no idea what's going on if any has any idea's it will be most appreciated.

Many thanks Jon.

reddiesel · 08-08-12, 11:45 PM

google and download the service manual, your tv probably has a self diagnostic mode, normally accessed with the remote, it sounds like a component is failing as you say it will trip itself out with a fault, its easier to replace the boards than try to repair sometimes the parts are hard to source, the boards are available on e bay or if you again google you can get exchange or used boards just quote the part number and model .

littlejon · 09-08-12, 07:59 AM

Thanks for the replay, done the diagnostic test, nothing shows up.

I don't really want to replace the hole board, will have to think weather it worth it. I will have a look around see how much they are.

Cheers.

reddiesel · 10-08-12, 12:17 AM

Try checking all the voltages first, the manual will show what they are they shouldnt be more than 3% out that will show if its the PSU, i would guess its more likely on the main board.

littlejon · 11-08-12, 02:28 PM

Hi, the sounds coming from the inductor on the PSU the one next to the 2 relays, after researching this, it's seem it's arcing.

Have no idea how to fix this other then getting a new PSU board.

Some epoxy might dampen the clicking, someone suggested changing the 2 big caps nearest to it but after reading another post relating to this it seems that will not help...

STUCK.

reddiesel · 12-08-12, 10:53 AM

Try Badcaps.com forums plasma section they will ask for picture of boards,they have helped me a few times.

littlejon · 12-08-12, 06:07 PM

Thanks, yer I joined the other day, getting some good advise.

08-08-12, 07:07 AM	#1 (permalink)
littlejon Junior Member Join Date: Aug 2012 Posts: 4	Plasma very strange problem (clicking when brightness is turned up) Hay people, well after spending day's trying to figure this out I just can't seem to find an answer. My TV is a 5 years old Hitachi PD5200 at first I thought it might be a PSU problem as these TV are know to have on, having checked all the CAPS and gave it a good look over every thing seems fine, TV works perfect no problems starting, sounds good BUT from time to time (well a lot) it makes a clicking noise, this gets worse when I turn the brightness setting up mainly. I have noticed when I turn all the setting for the colour down the clicking stops. The noise is coming from the PSU board from what I understand it's some sort of protection relay that's making the clicking noise (something like that). I really have no idea what's going on if any has any idea's it will be most appreciated. Many thanks Jon.

08-08-12, 11:45 PM	#2 (permalink)
reddiesel Super Moderator Join Date: May 2007 Location: Beds Posts: 5,781	Re: Plasma very strange problem (clicking when brightness is turned up) google and download the service manual, your tv probably has a self diagnostic mode, normally accessed with the remote, it sounds like a component is failing as you say it will trip itself out with a fault, its easier to replace the boards than try to repair sometimes the parts are hard to source, the boards are available on e bay or if you again google you can get exchange or used boards just quote the part number and model . __________________

09-08-12, 07:59 AM	#3 (permalink)
littlejon Junior Member Join Date: Aug 2012 Posts: 4	Re: Plasma very strange problem (clicking when brightness is turned up) Thanks for the replay, done the diagnostic test, nothing shows up. I don't really want to replace the hole board, will have to think weather it worth it. I will have a look around see how much they are. Cheers.

10-08-12, 12:17 AM	#4 (permalink)
reddiesel Super Moderator Join Date: May 2007 Location: Beds Posts: 5,781	Re: Plasma very strange problem (clicking when brightness is turned up) Try checking all the voltages first, the manual will show what they are they shouldnt be more than 3% out that will show if its the PSU, i would guess its more likely on the main board. __________________

11-08-12, 02:28 PM	#5 (permalink)
littlejon Junior Member Join Date: Aug 2012 Posts: 4	Re: Plasma very strange problem (clicking when brightness is turned up) Hi, the sounds coming from the inductor on the PSU the one next to the 2 relays, after researching this, it's seem it's arcing. Have no idea how to fix this other then getting a new PSU board. Some epoxy might dampen the clicking, someone suggested changing the 2 big caps nearest to it but after reading another post relating to this it seems that will not help... STUCK.

12-08-12, 10:53 AM	#6 (permalink)
reddiesel Super Moderator Join Date: May 2007 Location: Beds Posts: 5,781	Re: Plasma very strange problem (clicking when brightness is turned up) Try Badcaps.com forums plasma section they will ask for picture of boards,they have helped me a few times. __________________ Last edited by reddiesel; 12-08-12 at 11:00 AM.

12-08-12, 06:07 PM	#7 (permalink)
littlejon Junior Member Join Date: Aug 2012 Posts: 4	Re: Plasma very strange problem (clicking when brightness is turned up) Thanks, yer I joined the other day, getting some good advise.

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