Question about Sony KP-53S65 53" Rear Projection Television
A rather older set:
picture blinks may be screen controls now set too low
picture dark same or lens need cleaning
color off either adjustments or a Convergence issue
Posted on Mar 16, 2012
SOURCE: Sony Screen keeps Blinking
If the red LED blinks 5 times you have a AKB error. It is caused by the CRTs trying to balance the color, and failing. Its an annoying problem that happens when the CRTs get old. If its just beginning you can balance or slightly turn up the screen voltage to the CRTs to remove the problem, if its in the end stages, the CRTs may need to be replaced. This is however, very expensive. If you are daring and safe around high voltage, pop off the speaker grille, open the front panel up and find the focus block. Don't poke around! those big red wires have 30,000 volts running through them! The focus block is a black square box with six knobs on it. Three are labeled screen, three labeled focus. You will see each row labeled R, G, B for red green and blue. The writing is tiny. Mark all three screen knobs with a colored marker so you know where they started. Then turn each one up slightly. If you have a picture, put it to a black screen or blank input. Turn each knob up just unit you see the color over drive and turn it back down to black. You want to set it just below retrace to maintain black level but drive the CRT fully. Setting this is hard but may fix an AKB issue.
Posted on Dec 06, 2008
I had the same problem. My TV had been fading for months. When I first turned it on, it would be fuzzy and out of focus, plus the colours would be off, but after it warmed up it looked fine.
Then the other day it started turning off after a few minutes and the standby light would blink 5 times over and over.
I tried following the instruction given in the previous answer, with the following differences;
The front speaker cover did not have any screws at the bottom corners, instead it just popped out.
I just pulled at the sides gently untill it came away.
Next, I had to remove the 4 screw holding the control panel in the center, then pull the control panel out as far as it would come.
Next remove the 4 screws from the 1' x 2' wood cover that was behind the control panel.
This will expose the insides and you can see the 3 tubes and the panel on the right that contains the 6 adjustment pots. The pots were not labled, but I took a guess and got it right.
The ones to adjust are the top 3 (the bottom 3 must be focus)
It took me a while to get it right. be careful not to turn them too far clockwise as when I did it started crackling and I though I had fried something, but I guess I was ok.
I was having trouble getting the right balance, so I turned them all anticlockwise first, then turned each one clockwise till I saw color and then backed them off untill I got a black screen and could see the channel display.
When I finish adjusting them all, I turned the TV off for a few minutes, then back on and left it on for 15 minutes. the blinking did not come back.
I then plugged it back into my satalite reciever and got an awesom picture. Much better then before.
Now when I turn on the TV it has a great picture right away. I'm hoping it will stay this way.
My wife was dissapointed, she was hoping it was toast so we could get a plasma :)
I guess you can't please everyone.
thanks for the help and good luck if you are trying this.
WARNING, there are very high voltages inside the TV, be very carefull not to touch anything.
I used a long insultated screwdriver to adjust the pots.
Posted on Apr 30, 2009
The parts you need are two diodes, D6301,
D6309, and D6116, Sony part numbers 6-500-567-21 (D6301 and 09) and
8-719-081-97 (D6116), they are located on the G board, and that's
located on the left side of the set, as seen from the back.
D6116 is connected to pin 9 of transformer T6101, and D6301 and 09 are in series off of pin 7 of that transformer.
Posted on Jun 14, 2009
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