If E907 is open it's merely a symptom and NOT the cause. That said, there are several pico fuses in that unit. The three main are E903, E904 and E907 Hitachi p/n#AZ00106M If any or all of these are open it is an indication of a problem associated with the deflection board. Hitachi uses tiny yellow pico fuses. Most common are yellow and green. The "E907" is going to be printed right on the board next to the component it identifies. This is known as a location number.
But let's get onto solving your problem... The fuse is not going to be the resolution. Having the deflection board repaired will.
The regulator IC902 (remember that's a location number) is an STRF6628 it together with the horizontal output transistor and other components need to be tested to find out which culprit opened your pico(s). For this you'll need at a minimum a DMM meter, and ESR meter and a 20mHz scope. If you're lacking any of these you stand about as much chance of doing this repair as you do winning the lotto - - three times in a row...
But, you could pull the board and send it in to PTS Electronics who rebuilds boards for a flat fee... problem there is it will be torn down and waiting a week or two and if you have no memory for all those wires, and where they go when you get the board back,,,, well I wouldn't give that idea much hope..
Lastly, the alternative, is calling a reputable shop and have them estimate the repair. If you can take it into them you''ll cut the cost significantly. And if you're not sure where to find a reputable shop contact NESDA and have them give you a referral to one of their member shops in your area..
Hope some of this helps..
Jun 06, 2007 |
Hitachi 51UWX20B 51" Rear Projection...