Now I know the rest of the story: After I went to see the TV I was told it had happened after a storm the next day the set was dead. She had already recieved the insurance money. She said she did not want to spend much money on it as she obtained the set at a garage sale for 60 bucks 6 years ago. As I looked into the circuit board I noticed evidence of water damage and looking up the case and on top, yup, thats why she got it so cheap. I do think it is lightly damaged. As a grandmother of a close friend I didn't Intend to charge her but she gave me some bucks and the insides of the tv. I'm sure their isn't much time on it. If any one wants some parts on a 1993 RCA mod p46770ck (48" screen) contact me thru snailmail @ Whiskers, rr1bx57a zip 64632 Include your ph.# and I will call you. (I don't use the computer every day)
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RCA, CRT Projection TV, ITC222 chassis Faults - models D52W.., D40W.., D56W.., D61W.. ·Symptom: No Convergence, Picture is bowed and distorted, colors don’t align.
The Fuse for the convergence power supply has blown You'll also notice that the convergence settings have disappeared from the on screen menu. The fuse likely blew because of a fault on the convergence board. If you've never done soldering or dismantled a TV before this is probably not the best place to start. The back cover needs to be removed and the fuse (see picture) identified, the deflection/power supply board needs to be unplugged (label or mark all connectors beforehand) and flipped over and the fuse checked/replaced. You need a soldering iron and solder ****** or solder wick and a multi-meter to check the fuse. If you want to tackle it yourself see attached image for reference or get a quote from a repair shop (approx $200-$300 Total) the convergence board may also need repair.
Symptom: Dead Set- TV Tries to Start or intermittent dead.
The set could be in shut down mode due to a fault detected in the power supply, vertical or horizontal deflection circuits. The common problems with this chassis that will cause a dead set or intermittent dead set symptom are, bad power supply capacitors, bad flyback, bad HV cap in horizontal output circuit and cold solders (on opposite side of board) especially under the flyback area. To gain access to replace any of these parts the back cover needs to be removed and the deflection/power supply board needs to be unplugged (label or mark all connectors beforehand) and flipped over. These are only the most common problems and it could be any number of other faults. If you have electronic (TV) repair experience check the items mentioned (see picture), otherwise it's best to seek a qualified RCA tech for an estimate/service call. ·Symptom: Erratic operation of set – turns off by self, the volume or channel changes by self or on screen menu appears intermittently. Switches on the front panel assembly (FPA) problem. What happens with this model is the FPA switches (one or more) start to conduct just as if someone was pressing the buttons. This in effect locks up the system control or causes it to initiate erratic commands. The way to determine if the FPA is bad is to remove it by unplugging from set. This requires front panel disassembly. Note: The remote will still work with the FPA removed so the set can be tested. Hope this helped, johnnydiode, Fixya.
Your power supply board is dead, u know basic electronics' and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement. Good luck in solving the problem
U will not find schematic,the tv corporation don't release them.Just take the tv aparts.Tries Websites like Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.Just compare the power supply board in ur tv and the website that selling the power supply board.The picture look alike,ask the seller questions.Just buy and replaced it.U know how to solders?Just searches around the power supply board for those bulges and puff up capacitors.Replaced these capacitors will get ur power back.Most just reqiure replaced these capacitors to get the power back.
Thats the Power Supply. You need to call a service man, please disconnect this unit from the Power, It is dangerous to leave it plugged in. what is happening is the set has developed a serious fault, to avoid a fire or explosion, the PSU has shut down the set. that noise you hear is the power supply struggling against the fault. trying to start. Please for safeties sake, get a "Quote" from a reputable, preferably an RCA recommended service centre.
This could be a power supply problem, these tv's use a series of switching mode power supplies usually mounted in the same circuit board , the light flashing is an indicator that this is the problem, but these boards are expensive so you may want to get the tv looked at before anything else. You do not mention if the sound remains in your description of the symptom, but just in case it does then a back light inverter could be at fault. hope this helps. thanks for leaving you feed back.
It sounds to me that you may have a cold solder joint ( loose connection on the board ). I suggest you remove the board ( or seek professional assistance ) and solder any loose connections that you may find. That may correct the problem. Good Luck.
Have a Great Presidents Day
as set is dead
the problem is in power supply or horizontal section.
though it is a simple &less time taking.
but if you have no TV repair experience, or any experience tracing circuit flow with a schematic, call in a tech to assist you with this repair. This tv set is not the place to be experiementing inside of. You probably have bad capacitors and transistors in the power supply or the sweep power supply.
Being able to read a schematic and understanding how a TV works are two different things. These chassis that RCA used in these sets can be somewhat complex to troubleshoot. I would geuess that unless the power light comes on at all then you have a dead power supply in the TV.