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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you might need to have voltage checking at this time. if their is a dc output voltages at the power supply board.if none the main board will not turn on.then probably their is bad component at the power supply board.
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.
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.
hi, well unfortunately your unit has developed, a fault, a component is heating up, and failing this is probably due to a bad power supply, and you see the unit detects a fault, with the thermal component changing value and then the unit shuts down to avoid a fire or explosion. faults such as this are VERY hard to determine, it may be worth while waiting until the fault becomes "Hard" and then get a firm "Quote" for a repair.
that your unit has some sort ofPSU
fault, or a problem that is shutting down the Power Supply Unit, PSU. The noise is what gives it away. This
happens so that no further damage, and possible fire will occur. You need to take the unit to a reputable service centre/man
and ask for a firm "Quote" for the work to be done. It is that sound that gives it away, this is a typical
switchmode Power Supply problem.
Try a power drain and monitor if the TV continues to do this or not:
1. Unplug the product's power cable so the device is not grounded to the house.
2. Press and HOLD the product's own power button for 1 minute to drain the capacitors.
3. Plug the product back into a wall outlet and try to turn it on.
Note: This procedure works with battery operated devices as well so remove the batteries and
hold down it's power button. Electricity can remain in capacitors and on circuit boards
enough to prevent normal functionality. By clearing the residue electricity, your product
will have a fresh start and many times this will resolve a buggy or non-responsive device
that appears to be dead.
If this doesn't resolve the issue, it's possible the power supply is on it's last legs.
Ok, Look, you can do this. Just take care when desolder any electronic part. ( position). mostly in capacitor ( - + location). You can buy a : power supply kit for ctc169 chassis. But maybe don't need replace all parts, just replace 2 small electrolytic capacitor 2.2uf 100v and 39uf 100v and ready...I hope this will help you. Thank you !!
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
hey, I just fix my RCA p46770ck with that faint click sound when you try to power on. It was the HV splitter for $74.and change. after a long hunt to find the source of the problem I did what my local appliance store said to do replace the hole board for $275 luckily I was able to return that because it did nothing different than my board/module click.... click.... clickclickclickclickclick turn on you peace of @#%! any way if you unscrew the back cover off you'll see a black box at the top left corner with 4 red wires going to it groped 3 and 1. The 1 is your HV (High Voltage) supply and then gets split to each tube. Oh you should of unplug the tv before you touch any thing HV is 30,000 volts after you unplug you should push the power button to get ride of all voltage. please feel free to contact me at Heicheltechservice@hotmail.com for any Q: I can get part numbers or help in any whey i can
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.