I turned the tv on and shortly after I heard a pop and lost the picture. This happened to me before on a 27" sharp. To fix the sharp the tech had to replace the horz. control. I fell it's the same thing this time around. Your thoughts please? I do a lot circuit repair on pc's and consoles, just not tv's. So I feel confident that I can fix this problem if I knew what/where to repair/replace. Basicly if you can tell where to do a continuity/Ohm check and what the rating is, would be very helpful. Also how can I get a digital copy of the schematics for this model. The tv is an RCA 32" M# F32450 CH# ACT113CA1
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Re: Lost my picture
This modelis avail on a PDF file from Sams photo facts for $27.50. First thing you wanna do is disconnct the horizontal output transistor.. Measure the base to collector or emitter to collector for a short. If it is shorted then the high voltage transformer(flyback xformer) is the reason it is bad. Its part # is 257805 and cost about 40 bucks at most RCA parts houses Also these models a small coil can cause the horizontal to blow out and its the small coil that conects the horizontal output transistor's base to the horizontal output tranformer secondary winding. Sart there first if you dont get anywhere please contact us again and post the pdf and we will look and ask you to do more checks. Good Luck
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I had the "pop" happen to me about a month ago. Sounds like the same symptoms as you list. I searched online to find the most common fix to the the Y Sustain board. You can find this part online for about $150. I have used rivervalleyelectronics.net. Ultimately, I chose not to fix my tv and bought a new one. Before trashing the TV I removed all the boards and have them available for sale if you are interested. I will sell all the boards, including speakers and cooling fans for $150 plus shipping. Contact me if interested.
There will be a fault in either the Y or Z sustain boards, these are responsible for driving the screen 9hence sound but no picture). The popping sound willhave either been a fuse blowing on the board or another possibility is one of the drive ICs on the buffer board has blown. If so it's best to replace the board.
Most likely what happened is one of the capacitors went bad. When a capacitors goes bad it produces a popping sound. This could be an easy and cheap fix if you find the bad capacitor or capacitors. The bad capacitor will have a bulging top most likely on the power board but could be anywhere.
I believe you have lost the green channel leaving only the red and blue. It could be an internal connection like a solder joint or connector, or it could be component failure from the CRT to an adjustment pot. Being the set is ten years old it wouldn't be worth spending a lot of money on it. You can buy a 27 inch TV now for almost what a repair would cost. If the picture was very good before this probem you may try to get it fixed cheap. Otherwise it probably wouldn't be worth it.
My 27 inch TV's (A Sony and a Sharp) are pretty old and I would fix them myself if the picture tube was very good.
This may be a very good time to buy considering the discounts being offered. ;-)).
The over current protection (OCP), unit goes to the standby mode then displays the 2 blink fault. Could be a short in the power supply of any of the circuits. It's best to have a Certified TV repairman look at it. Generally when this happens, the TV keeps getting worse and repairs can get expensive.
If the repairs are over $300, then I would look into buying a new set.