29 "tonomac slim TV, with universal chassis HY-818C-1 (china)
The components correspond to hello colleague: the cushion effect you see if you can correct them from the pre-set RP302 (HW) ... if it doesn't correct anything check the transistors V302 and V303 (mod, wide) if they are in good condition .. .review or change the C305 of 2.2mfx50v ... in relation to the vertical measure if 24v reaches pin 2y6 of the vertical lc LA78040 / LA78041 ... check or change the C457 of 1000mfx25v ... measure the R459 must give 1ohm ... comment if these comp coincide, with those of your chassis and if these contributions were useful to you .... greetings !!
It is the yoke that does not adapt to this plate generating the distortion of horizontal geometry and lack of height. I fear that changing the output transistor H, with or without damper, is no solution and will continue to burn it, therefore: incompatible yoke impedance. If the universal board does not bring optional pins in the connection to yoke H, there would be no way.
Without pretending to discourage you, just inform you. This universal board would be for a 21 ", (LA78040 / 41); for a 29" I would use LA78045. And, for the values in pin-cushion, flat. Well, that the plate will serve you in a 21 "flat. I regret not being able to give you a solution to the specific case; gajes of the trade. Greetings.
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Curso Refrigeración Comercial Aplicado a Diagnóstico y Reparación
