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MAC: 2008 Hitachi RPTV model 65F59A gone green

 
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AnalogRocks
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PostLink    Posted: Tue Jul 24, 2012 11:11 pm    Post subject: MAC: 2008 Hitachi RPTV model 65F59A gone green Reply with quote


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Picture has gone to a green tint.

Mac??

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Curt Palme
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PostLink    Posted: Tue Jul 24, 2012 11:15 pm    Post subject: Reply with quote

Is that a question or a statement? Smile

Are the R and B still there? Is the b/w pic tinted green as well?
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AnalogRocks
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PostLink    Posted: Tue Jul 24, 2012 11:20 pm    Post subject: Reply with quote

I'm diagnosing remotely. He tells me all inputs, HDMI, component and composite as well as antenna (ATSC) have a green tint.

When he does the magic focus beam alignment he can still see the red come up.
They had a storm blow through last night and a possible brownout. Something's not right.

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AnalogRocks
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PostLink    Posted: Wed Jul 25, 2012 2:19 am    Post subject: Reply with quote

AnalogRocks wrote:
I'm diagnosing remotely. He tells me all inputs, HDMI, component and composite as well as antenna (ATSC) have a green tint.

When he does the magic focus beam alignment he can still see the red come up.
They had a storm blow through last night and a possible brownout. Something's not right.


He was watching OTA TV, switched back to satelite on HDMI and everything was green.
Maybe got zapped by the storm?

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macgyver655




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PostLink    Posted: Wed Jul 25, 2012 3:05 pm    Post subject: Reply with quote

Switch to an input with no connection so you have a black screen. Is the green tint there? If so then reduce the green screen control.
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AnalogRocks
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PostLink    Posted: Wed Jul 25, 2012 3:42 pm    Post subject: Reply with quote

macgyver655 wrote:
Switch to an input with no connection so you have a black screen. Is the green tint there? If so then reduce the green screen control.


Do you mean in the service menu? I'll be there to have a look on Friday.

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macgyver655




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PostLink    Posted: Wed Jul 25, 2012 3:57 pm    Post subject: Reply with quote

AnalogRocks wrote:
macgyver655 wrote:
Switch to an input with no connection so you have a black screen. Is the green tint there? If so then reduce the green screen control.


Do you mean in the service menu? I'll be there to have a look on Friday.



No, the screen controls are on the focus pack. You have to remove the back cover. Some are behind the front cover but I'm pretty sure they are in the back on this one. Set them like a projector. Go to black screen, set main brightness at 50%, turn up a color until you can see a raster, then reduce until raster is just gone. Do all 3 colors. You can also focus all 3 while you are there but you'll need a mirror, probably.
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AnalogRocks
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PostLink    Posted: Wed Jul 25, 2012 4:12 pm    Post subject: Reply with quote

macgyver655 wrote:
AnalogRocks wrote:
macgyver655 wrote:
Switch to an input with no connection so you have a black screen. Is the green tint there? If so then reduce the green screen control.


Do you mean in the service menu? I'll be there to have a look on Friday.



No, the screen controls are on the focus pack. You have to remove the back cover. Some are behind the front cover but I'm pretty sure they are in the back on this one. Set them like a projector. Go to black screen, set main brightness at 50%, turn up a color until you can see a raster, then reduce until raster is just gone. Do all 3 colors. You can also focus all 3 while you are there but you'll need a mirror, probably.


Right right right. Now we're on the same page.

What do you think may of happened?

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macgyver655




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PostLink    Posted: Wed Jul 25, 2012 4:20 pm    Post subject: Reply with quote

AnalogRocks wrote:


What do you think may of happened?


Hahaha, your asking a question without me knowing just whats wrong yet. I could give an assumption thinking it's 1 problem and the real problem ends up being something else which would then have a different assumption.

After you find the true problem I can then give a better assumption....

For all I know it has a failed neckboard or tube at this point. Or something in a completely different area.

How do the menus look? Does the black background look green tint when doing the magic focus?
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AnalogRocks
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PostLink    Posted: Wed Jul 25, 2012 4:23 pm    Post subject: Reply with quote

macgyver655 wrote:
AnalogRocks wrote:


What do you think may of happened?


Hahaha, your asking a question without me knowing just whats wrong yet. I could give an assumption thinking it's 1 problem and the real problem ends up being something else which would then have a different assumption.

After you find the true problem I can then give a better assumption....

For all I know it has a failed neckboard or tube at this point. Or something in a completely different area.

How do the menus look? Does the black background look green tint when doing the magic focus?


Hey, just asking a silly question....

Laughing

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AnalogRocks
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PostLink    Posted: Fri Jul 27, 2012 10:46 pm    Post subject: Reply with quote

OK, fixed All I did was open it up and clean it and it works now. However I found a puffed capacitor. Does it look like it's time to change this? It's located beside the HV flyback:
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macgyver655




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PostLink    Posted: Sat Jul 28, 2012 1:58 pm    Post subject: Reply with quote

Hard to tell. What makes you think it's swollen?
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AnalogRocks
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PostLink    Posted: Sun Jul 29, 2012 11:25 am    Post subject: Reply with quote

macgyver655 wrote:
Hard to tell. What makes you think it's swollen?


I can feel the top of it. It's domed up as compared to the other capacitors in the set.

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macgyver655




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PostLink    Posted: Mon Jul 30, 2012 3:33 pm    Post subject: Reply with quote

Based on what I see I would still not condemn it. Only an ESR and/or value test would confirm whether it needs to be replaced or not.
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AnalogRocks
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PostLink    Posted: Mon Jul 30, 2012 4:45 pm    Post subject: Reply with quote

Funny how it was marked at the factory though.

It's working,I'll leave it alone for now.

Thanks for the help!

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AnalogRocks
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PostLink    Posted: Sat Jan 05, 2013 11:05 am    Post subject: Reply with quote

Had a double snap over the holidays with the accompanying picture drop out. Where can I get HV parts for this one?
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PostLink    Posted: Sat Jan 05, 2013 4:39 pm    Post subject: Reply with quote

Well I think the first thing is to find out where the snap is coming from, lol.
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PostLink    Posted: Sat Jan 05, 2013 4:45 pm    Post subject: Reply with quote

There is a service bulletin on this model for arcing or snapping. The cure is to cover the entire anode boot on all 3 tubes with silicon.
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PostLink    Posted: Sat Jan 05, 2013 5:48 pm    Post subject: Reply with quote

Cool thanks!
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