I used the remote to turn it on one day. It made a slight noise like it was going to come on but did not. It was having no problems up to that point. We did have a power outage a few days before, but it was working after the outage. It was connected to a surge strip. The chasis # is AP411.
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Re: TV will not turn on.
Are you sure your remote is working ? Did you try using the power button on your set? IF so, then something is wrong inside you set.
Possibly a power surge got through your supressor and caused a delayed reaction failure in your power supply.
Also some other part may have just decided to fail.
You need to have a tech check it out for you.
If Ur Techy Enough You Can Open The BAck cover and check if the fuse is busted then replace it , still if you see that the fuse is fix with no sign of burned or crack , you must then see a technician for a repair job
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is the fizzing noise when the screen is really bright? if so the scan coils on the tube have come loose and need glueing down with nail varnish i know it sounds strange but it really works
if the fizzing is coming from the tv then you have whats called dry joints
and this will need to be resoldered or the tv will shut down if you can do this yourself then the best way to find them is to remove the back and turn the tv on its side turn on the tv and turn off the light you will be able to see the dry joints sparking on the baord
I have the turning on an off problem with another TV brand (that is an analog v on a cable converter box) that at times seemed to come from signals from different remote devices in my room, but at other times nothing at all. The on and off times varied from random, to distinct cycles. Some days there's no on and off problem at all.
There's an interesting answer string when looking for "tv turns on and off" that, among a few other answers, many times points to a capacitor going bad.
For more precise ideas, enter in the web search field your make and model with 'turns on and off" and see what comes up. There are some nice repair log stings on the internet now that help too.
on the back of the sets there are two knobs one over the other one saying screen and one saying focus perhaps or they may just be there if your standing behind the set they would be on the right hand side lower rear area
let me be simple...
If you see them try pushing input button on the remote so you have a blank screen and then turn the screen control slightly till the lines are gone
I am an electronics technician who just happened have been given the same set as you because it was giving the previous owner the same problem. Since I am confident in my trade, I took the set and diagnosed noise in the remote receivers input to the cpu.
What this means is that a capacitor( or something) wasn't working properly and was either not filtering the noise out or it was introducing noise into the data stream that controls the TV through your remote control.
My fix was to essentially cut out the entire remote control input to the TV. Since I have a directtv box to give me remote control, I don't care if the TV's remote works anyway.
The way I did this was to open up the unit and find the front I/O board were the buttons meet the switches for power,chaennel, volume, etc. On that board there is a plug with white wires and one black wire. The two wires to cut are the one next to the black wire and the one all the way at the other end of the black wire. These two wires are easy to splice back if you do not like the results of this procedure so that there is really no risk of damaging your set. If you wish to verify the proper wires to cut, they are the two wires that come from the IR receiver's side of the board YET DO NOT GO TO THE OTHER SIDE WITH THE BUTTONS! There is one wire that does indeed go to both sides.
This may not be a perfect solution but it is free. I hope that this will help someone out there.
I want to thank whomever suggested the following...it works. I had been trying for days. Here is the solution:
Turn off the cable box and hit the menu button on the universal remote. The screen with the closed caption selection appears. Scroll down to the line regarding subtitles and turn it off.
Dead, led flashing red/green at first, then going to red standby
Replace C604 (1000uF, 16v) elec. cap. It is in the decoupling circuit for the 5 volt supply
Reverts to standby from switch on via TV or Video
No 5v rail because FET MTP3055 o/c. (BUZ71 will do nicely)
Goes straight to standby, after a quick burst of power
Replaced R952 (39K), had gone slightly high
The slight flash on the screen is usually because the CRT (picture tube) is holding a better than average charge and this is what we call "pre-glow" The noise that you hear, is that everytime you turn it on or just after it has been off for a while? If only after the set has been sitting off for a while then your noise is the internal degauser for the CRT and that noise is 100% normal. The degausers in Sony TV's are so strong they usually make the plastic cabinet vibrate a bit.