Question about Akai PTH5498 54" Rear Projection HDTV-Ready Television

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Shadowing All images have a blue shadow.

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Re: Shadowing

Have you tryed to adjust the on board convergence yet?? it sounds like the blue horizontal could have shifted. Put the aset in test mode and adj befopre taking set to servicer. Good luck.

Posted on May 09, 2006

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Re: Shadowing

If still under warranty or if you have no electronic repair experience you should take the set back to the shop or to a repair person. Some of the solutions described below can be dangerous, TV's are very hazardous to service. Even when plugged out, TV's can store very high voltages. Looks like a picture tube problem. Try to reduce the contrast, maybe it will be better. Look into the three tubes while the TV is running, and observe the picture quality of the three. If the red and green are crisper and clearer, and the blue's all hazy from bacteria growing in the coolant, then the fluid needs to be replaced. The CRTs of the colors that seem hazy need to be removed from the light box to be serviced. The coolant needs to be drained, the CRT assemblies disassembled and totally scrubbed clean and refilled, then reinstalled and converged. If the coolant is clear, it can be a weak CRT. Also the convergence STK ships might need to be replaced, and the soldering checked. Good luck

Posted on May 09, 2006

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Ghosting or a 3D image. A yellow and blue ghosting or shadowing image. Looks much like the top picture in the "picture ghosting image" entry. Is this a convergence problem?

Your convergence has failed and needs to be repaired. Once quick test is to goto your convergence menu and see if you can adjust red and blue. If not its has failed and needs to be fixed. You can call in a repair shop or you can get the parts and instructions from and do the repair yourself. Its a fairly easy DIY fix.

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Good Day, sh28;
Sounds like bad convergence IC’s, chips. Hit recommends using STK392-150’s and replacing the bias resistors.
Good Luck, Big Irish.

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Convergence amp ic bad
Or send to
good luck
please mark the post with a fixya

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