Zenith A25A23W


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Zenith A25A23W

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maverickr
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Jul 31, 2007, 10:52 PM

Post #1 of 8 (1588 views)
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Zenith A25A23W	Can't Post

I don't get any raster on this. Everything else seem to be fine but no raster, which means no picture. Can anyone suggest areas that i may need to troubleshoot? I can see the onscreen menu and everything but still no raster.

Paulpablo
Enthusiast

Jul 31, 2007, 11:49 PM

Post #2 of 8 (1580 views)
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Re: [maverickr] Zenith A25A23W [In reply to]	Can't Post

Repaired one of those one time and it was Q2209, Q2210 and the tuner! You might get lucky and it will just be the transistors.

(This post was edited by Paulpablo on Jul 31, 2007, 11:52 PM)

maverickr
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Aug 16, 2007, 10:23 PM

Post #3 of 8 (1542 views)
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Re: [Paulpablo] Zenith A25A23W [In reply to]	Can't Post

Ok. Will check it out. Where did u purchase the replacement transistors?

Paulpablo
Enthusiast

Aug 16, 2007, 10:34 PM

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Re: [maverickr] Zenith A25A23W [In reply to]	Can't Post

I don't know where you are located, but a local parts house will find for you.

mel
Veteran

Aug 17, 2007, 9:07 PM

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Re: [maverickr] Zenith A25A23W [In reply to]	Can't Post

You can order them from www.wehaveparts.com.

(This post was edited by mel on Aug 17, 2007, 9:08 PM)

maverickr
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Sep 8, 2007, 12:59 AM

Post #6 of 8 (1508 views)
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Re: [Paulpablo] Zenith A25A23W [In reply to]	Can't Post

In Reply To

Repaired one of those one time and it was Q2209, Q2210 and the tuner! You might get lucky and it will just be the transistors.

Well i wasn't so lucky afterall. Will have to change the tuner as well.
I checked the transistors out and they were shorted so i replaced them and i got the raster back. Tuner wouldn't pickup any channels so i will have to get a new one. After i replaced the transistors i'm getting some arcing right where the high voltage line enters the tube.Any ideas what may be the problem? Thanks for all the help on this great forum!

Paulpablo
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Sep 8, 2007, 2:12 AM

Post #7 of 8 (1504 views)
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Re: [maverickr] Zenith A25A23W [In reply to]	Can't Post

With the TV OFF, discharge the high voltage in that anode hole. You do this by taking a slim screwdriver and attach a jumper from the screwdriver to the ground wire that runs around the back of the tube. Remove that anode lead and inspect it very closely to make sure there are no breaks in the rubber and clean it. Clean all around that hole upto 8 to inches away.

maverickr
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Sep 8, 2007, 11:42 PM

Post #8 of 8 (1487 views)
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Re: [Paulpablo] Zenith A25A23W [In reply to]	Can't Post

Thanks for all assistance! When i changed the tuner the arcing stopped. So it seems the tuner, in some way, was causing the arcing.

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