I have a problem with my hitachi when i turn it on the red power light turns on but i get no picture or sound. has anybody experienced similar situation? im in the process of looking for a repair person but would like to know possible problems so i dont get ripped off. i have limited knowledge of electronics (enough to get myself in trouble) so i'm trying to get a feel of how common and difficult it is to repair a problem like that.
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Re: tv powers on but no picture or sound
Luckyly here are tech that have knowledge of electronic,if you dont whant any boddie ripp you off, well this gonna help you. Definitively, your set have a short, in the power supply or in the horizontal circuit, with this in mind request to varius tech an estimate, and what, they think is the problem, then you can take a good decision...good luck
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It's most likely the smps. You'll first need to check voltages at CN63, pin #1-(+5v), 3-(+3.3v) and pin 8-(+6v) Also check CNPPS, pin 1-(+30v), 4-(+5v), 8-(+12v), 12-(+10v) absent these values and the power supply is clearly the problem.
When u turn the tv on,u hear alot of clicking?That mean the Ballast that help the projection bulb to work is dead.Change the Ballast,might as well change the bulb too.U don't know what is the condition of the projection bulb in.
it is the power board in the tv hase some bad capasators in it but can cost some money to fix if unsher how to do it on your own if you live in central new york i do have my own shop and im cheep but i can not warenty any thing but i can help 315-280-0508 storm electronics ask for corey
Most common fix is shorted cap C702 ? near flyback transformer
and open E994 pico fuse in power supply. Capacitor is sometimes partially covered by glob of glue from factory....
Let me know right away,please......................T.