My RCA HD50LPW175yx7 is blinling five(5) times and then shuts off
I have taken the back off and checked for obvious problems, no burnt components, reseated connections. When I try to turn the set on the front blue display lights up momentarily then blinks five (5) tmes then goes back to blue then shuts off. Is it the bulb? I haven't tried that yet, kinda costly.
Re: My RCA HD50LPW175yx7 is blinling five(5) times and...
I have the same t.v. the owners manual says "if the light blinks 5 times, pauses, and blinks again 5 times, the lamp is trying to turn on.If the t.v. does'nt turn on after 5 minutes and the light blinks steadily for 1 minute , one of the following is possible: lamp door is open , lamp is dead , or the power supply within the t.v. needs service.
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Five consicutive blinks at a time and the stops and again blinks five; is its self diagonosis procedure. All modern Sony sets has this function included in its circuits. If the system control IC inside it detect any fatal fault inside its circuits system, it will give a signal to its power control unit to shut it down its high voltage outputs to protect the other components from further damage. In your set; as Sony describes; I quotes:-
Five blinks - AKB circuit (automatic kine bias), the timer/standby indicator blinks for about 30 seconds then goes to the self-diagnosis function. Something is wrong with the video. Check video out, Q705, 732, 761 and other components on the C board, also check Q218, 219, 220 on the A board. In addition, unit could be in IK blanking, try turning up screen slightly.
Actually the components marked in numberes will not be the same as in your TV. But the fault will it be.
If you have enough knoledge in electronics and have a concept of soldering and have a good quality multimeter; youreself can do this work by home. OK
Possible error in the main board as the processor is getting back the feedback errors causing it to shut off. so trace the main voltages from the main SMPS unit as disconnecting from the main board to check the voltage, Check voltage on connecting , trace the line that is reducing the voltage off as it will lead to the shorted component.
Alternatively the output sections can also be faulty as it not giving back signals to the microprocessor.
Check the CRTs . That model was notorious for laser like cuts right around the neck by the yoke. I just had one today doing the same thing. The CRTs are no longer available so the set is scrap. I hope that's not your case. Let me know.
Was this the 220 ohm in the power supply??? and if the 5 amp blew right away then it probably took out the bridge rectifyer with the power surge that comes alog with hurricane damage to the power lines as I used to live in florida and repaired lots of sets damaged from storms!! After you check the bridge rectifyers I would start looking to find any other shorts. First measure across the ac line with the fuse replaced but not plugedf in . If its shorted check what I mentioned before if its good after you replace the shorted parts you maybe in luck. need more assistance go to sams photo facts download a schematic and we will trouble shoot this together if you post it here so i can look at it. good luck