Question about Sharp 21B-S10 21" TV
Check heater voltage for crt, check screen line conection from flyback, check ic jangle(la78610)
Posted on Oct 17, 2010
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Posted on Jan 02, 2017
check&change pt heater resistor[series in lot].increase screen grid voltage,your problem continue.sound is working normal no display you have this problem than it is plain raster means no picture,no snow.than change croma icµ processor.rarely picyure tube problem.before change p.t.this board check to connect another tv.but not solve this problem change anew board.
My sujession is chineese board cost is very low.so my first prefferance is fix a new board. yhank you.
Posted on Oct 08, 2010
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