Question about Sony HMD A220 17" CRT Monitor

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Toshiba CF3566A I have a problem with above referenced set. It was dead except for a faint "ticking". I found a post in this forum by "pasty" who advises the following: "Common for the horizontal output to short in these models is a 2sc3892A which usually shorts because of a 10 uf 160V filter capicitor on the primary of the H drive transformer deteriorates & distorts the waveforms causing H out transistor to overheat & short" I have located the Horizontal output transistor which is located at Q404. I replaced it. The TV now powers up (no Ticking noise) but shuts down after 10 to 15 minutes. I can NOT locate the above referenced 10 uf 160V filter capicitor. I have found one such cap on the power supply board and is identified as circut # C416. I dont think it is that one. I dont know where "the primary of H drive" is that the solution post refers to. Can someone please identify it for me by telling me on which board and what circut number it is? I am almost home free on this...I welcome any assistance. Thank you, The Bandit

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Re: Toshiba CF3566A

Follow the diagram, the base of the hor out should go to the secondary of the hor drive transformer, and going to the primary circuitry you should find a transistor, a small transistor, look for its collector and you should find a filter capacitor, may not be the same value but it is the filter capacitor.

Posted on May 20, 2007

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