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Toshiba CX29760

 
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JBC2005



Joined: 24 Oct 2006
Posts: 3

PostPosted: Tue Oct 24, 2006 2:53 am    Post subject: Toshiba CX29760 Reply with quote

I need some help with this TV, it's driving me nuts!
I had a black bar at the top of the screen. Replaced C301 & C305 (1uf @50v caps) and now I have a new problem! I now have a series of lines at the top of the screen and it looks like a portion of the top of the screen is folding over. Any ideas what I have to replace? Is it another leaky cap or could it be the vertical IC (IC 301 or AN5515)?
Any help would be great!
Thanks
JBC2005

Toshiba 27" TV
Model # CX29760
Chassis # TAC9045
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JBC2005



Joined: 24 Oct 2006
Posts: 3

PostPosted: Wed Oct 25, 2006 1:14 pm    Post subject: Reply with quote

No advice for vertical foldover?
Anyone?
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PostPosted: Thu Oct 26, 2006 10:56 am    Post subject: Reply with quote

Not really. Did you replace all of the electrolytics around the verticle IC? Use quality high temperature replacements. (105 Deg C)
Check for failing solderjoints, or resolder the IC's connections.
Test the supply to the verticle IC, is it in specification without excessive ripple? If ripple is excessive, test the rectifier diode, filter capacitor and solderjoints.
Test the capacitors around the sync separator. Is there a pin circuit feeding into the verticle coils?

Hopefully one of these suggestions might help. Smile
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Guest






PostPosted: Thu Oct 26, 2006 11:49 am    Post subject: Reply with quote

Don't know this exact model... do try...

Replace vertical output IC, C308, R327 and D302.
PARTS:
Vertical output IC AN5521
C308 220/35
R327 5.6 1/2W
D302
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minnie



Joined: 18 Aug 2005
Posts: 2877
Location: Hell

PostPosted: Sat Oct 28, 2006 10:43 pm    Post subject: Reply with quote

There should be three red caps in the verticle circuit. Replace them.
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JBC2005



Joined: 24 Oct 2006
Posts: 3

PostPosted: Sun Oct 29, 2006 5:29 am    Post subject: Reply with quote

Replaced IC301. Problem solved.

For future reference, anyone with this type or similar tv, IC301 is Panasonic part # AN5515. Can be cross-referenced with ECG1684.

Thanks for the help.

Jon
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