RCA D56W20 / ITC222 3 Green blinks but won't power on. Flyback?


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RCA D56W20 / ITC222 3 Green blinks but won't power on. Flyback?

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Pioneer621
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Jan 4, 2010, 4:03 PM

Post #1 of 20 (23656 views)
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RCA D56W20 / ITC222 3 Green blinks but won't power on. Flyback?	Can't Post

Hello everybody!

I am new here & have some TV repair questions on a TV I am currently trying to bring back to life.

I am not a professional TV tech by any means, but have repaired a few with minor problems & don’t mind tinkering with them if I have to. I mostly work on stereo amplifiers & various other electronics, but I am still learning the TV repair as I go.

On to my question: Ok, I was brought a big TV to see if I could repair it cheaply, so I told them I would try.

Here is the TV make & model / chassis.

Brand: RCA
Model: D56W20
Chassis: ITC222

I have done some searching online & it appears others have had the same problem with this chassis.

When I plug it in & press the POWER ON button, the green light comes on for a few seconds & then it sounds like maybe a click type sound around the flyback transformer when the HV is about to start up then it shuts down, it does this a total of 3 times then shuts completely off & then I have to unplug it & wait until the power supply filter cap dischargers or I discharge it myself before I can hit the power button gain to try to restart it. It does this every time I try to power it on.

I opened the lower back cover to inspect the board & found CP150 capacitor vented so I replaced that to see if it was a simple fix, but that did not solve the problem & it continues to power on & off 3 times.

I checked the fuses including the little brown ones by the flyback & they seem ok.

Upon closely inspecting the flyback transformer it looks like there are a bunch of “hairline” cracks towards the top of it, nothing major, but possibly a sign of damage. On the back of the flyback there are a couple small cracks it appears, by a small dimple, not sure if it is suppose to be there or not, hard to see it without removing the thing. I will try to post some pictures of the cracks & flyback I am referring to. This TV may need a new flyback & from what I have read online, there were others with flyback problems with this chassis.

If anyone can tell me if this flyback looks like a problem I would be more then happy. If there are other things I can check let me know as I would like to get this TV working for this guy, he don’t want to spend much on it, but I think he will be willing to get a new flyback & maybe some other small parts, otherwise I think he will just buy a new one.

I also pulled the front covers & looked at the projection lenses & they look ok, nothing looks like its leaking & they look fine, but I have never worked on a projection TV like this so I am not sure what it is suppose to look like.

Ok, thank you all for reading this & I hope someone can help. I really don’t want to order a new flyback if that is not the problem, so I figured I would ask people with more knowledge then me.

Take care! Thanks again!

Here are the images of the flyback (I hope you can see them ok): Had to edit picture links.
http://www.postimage.org/image.php?v=aVUzUti

http://www.postimage.org/image.php?v=Pq17ZQ2A

http://www.postimage.org/image.php?v=gx1tT4IA

http://www.postimage.org/image.php?v=aVUCB50

http://www.postimage.org/image.php?v=Ts1N7Gdi

http://www.postimage.org/image.php?v=Pq17_sXS

(This post was edited by Pioneer621 on Jan 4, 2010, 4:18 PM)

jts1957
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Jan 4, 2010, 6:39 PM

Post #2 of 20 (23639 views)
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Re: [Pioneer621] RCA D56W20 / ITC222 3 Green blinks but won't power on. Flyback? [In reply to]	Can't Post

Flyback IS one of many possibilities...
SOME in no particular order:
Bad horizontal output transistor - DL012 - DL201 - DL030 - DL032 - CP120 - CP114 - Solder LL037 - Unplug flyback from splitter - Ribbon cable plugs bulged - Check wiring to CRT boards from SSB - loss of vertical deflection. Cool

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Location: Far, Far Away

Pioneer621
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Jan 4, 2010, 9:04 PM

Post #3 of 20 (23631 views)
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Re: [jts1957] RCA D56W20 / ITC222 3 Green blinks but won't power on. Flyback? [In reply to]	Can't Post

In Reply To

jts1957,
I sure do appreciate you taking the time to help me out! Especially so quickly!

“one of many possibilities” Sounds like this TV may be a headache. I’d hate him to have problems down the road with this thing & I don’t wan to be working on this thing forever; maybe I should suggest he look into getting a newer / better TV?

Ok, I checked DL201 - DL030 - DL032 IN CIRCUIT (it would have probably been better to check them out of circuit but they seemed to check out ok) I checked DL012 out of circuit since it showed a short when checking in circuit, I think this is normal for that area at the H.O.T in this TV? It looked like some inductors / chokes connected to each side then to a common area as is why I figured it was normal & just needed to lift it out of circuit.

After looking at CP120 - CP114, I realized I already replaced those as well when I replaced CP150, I remembered after I rechecked them as I was unsure about them when I was first inspecting the TV, so I went ahead & changed them out, but of course that did not change the problem either.

I looked over the wiring that connects the SSB board to the CRT boards & it looks ok, however I did not actually test it, I probably should, but from looking at it, it looks good, should I check it with an ohm meter to make sure it is solidly connected?

None of the ribbon cable plugs looked bulged from what I can see, they seem ok as well, but again, should I check it with an ohm meter to make sure it is solidly connected?

I unplugged the flyback from the splitter & it still did the same thing whwn powered up. (I could be wrong on what the splitter is, but I think it is the module that the main large red HV wire out of the flyback connects into then splits it out into a few more for the CRT’s, if so, that is the one I unplugged from the flyback, I have never dealt with the splitters before but I assume that is what that is & I have it right.)

I did NOT get a chance yet to re-solder LL037, the joints looked ok, but I will re-solder it just incase.

What would cause a loss of vertical deflection? I’m guessing an I.C or maybe a diode / cap etc. in that circuit?

Like I said, I am no pro at TV’s, I have fun tinkering with them, but I have a lot to learn & most of the repairs I have done to the TV’s I have worked on were relatively simple things.

Again, thanks so much for the help! Take care!

Pioneer621
New User

Feb 23, 2010, 1:12 PM

Post #4 of 20 (23477 views)
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Re: [Pioneer621] RCA D56W20 / ITC222 3 Green blinks but won't power on. Flyback? [In reply to]	Can't Post

Hello again everybody!

Here is where I am at now with this TV. (Sorry I type a lot, but I try to cover everything)

I went ahead & replaced the Flyback transformer (as well as the caps I replaced in my prior posts).

The TV fully powered up once the new flyback was put it & seemed to work fine, I ran the auto convergence & it had a very nice picture.

I then tested the TV for about a week steadily turning it on & off each day too simulate normal use & the TV worked great all around.

Then the guy came over to pick it up, I showed him it working for a couple minutes, he said the picture looked great, actually even better then it use to, then we shut it off & we began to load it into his truck. I lost my grip & set it down a little rough on the way out the front door, but nothing to where it should have damaged anything as I did try to ease it down while it was slipping from my hands & it was only a couple inches off the ground (I will never work on any large TV’s again, way to difficult & too hard to move / carry, that’s it for me unless I get a free one for myself to play with).

Once they got it home they had too carry it down to there basement & they said they were not too rough with it either. But as soon as they plugged it in, it powered on he said for a few seconds or so, maybe a minute, & it had a picture and everything, then shut back off by itself & the power light would blink & it would not power up at all after that.

I went over there yesterday to check it out for him & everything looks ok, but yet it will not power on.

When I plug it in then look at the GREEN power light, it blinks in a sequence of 5 blinks then pauses & does 9 blinks & keeps repeating this over & over, I am not sure if it starts with the 5 blinks or the 9 blinks.

I did notice as well that if I unplug it & let the caps drain out & then plug it back in, sometimes the lights will not blink the same right away, I have to press & HOLD the power button for a second or so then it blinks ONCE, then if I hold it again or maybe it was right after that it blinks 9 times then stops & does not blink anymore. But most of the time it does the 5 & 9 blinks.

I checked some of the lower voltage points that are labeled I think 6 volt, 10 volt & or 20 volt on the solder side of the board at the caps I replaced & I have no or very low voltage on those test points, now if I remember right, I should have voltage on those even in stand by mode as I had voltage there before replacing the flyback, its like its not getting voltage in some of the lower powered circuits & not letting it turn on. I tested one of the main filter caps (I don’t remember the board number but its towards the corner of the board) but it has around 300vDC or so, so it is getting power there. (It sure is difficult to work on stuff at someone else’s home)

Can anyone tell me if that 5 & 9 blinking sequence is some sort of code that can lead me to or in the direction of the fault?

Or does anyone have any ideas as to what could be wrong now? I was thinking a loose connector or something but I went over virtually everything & could not see or feel anything loose, even checked the solder side of the board & retouched up a couple joints.

Thank you for reading this & for any additional help on this TV. Again, I am no pro at this TV stuff, but enjoy learning as I go. Seems like what ever is wrong now happaned during its move back home, as it should have worked longer then a couple seconds, I had no trouble while I was testing it, I don't know whats wrong with it now, seems like a totally different problem.

Thanks again! Take care!

lonly
New User

Nov 7, 2010, 4:45 AM

Post #5 of 20 (22869 views)
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Re: [Pioneer621] RCA D56W20 / ITC222 3 Green blinks but won't power on. Flyback? [In reply to]	Can't Post

HI Di you figerao thes problem 5 & 9 blinking sequence i heave this same problem on a rca D40W20 i'm not specialist on electronic in my research this is the closed i can faund i well state tun for update Thank (sorri for my speling but ingles is my secund lenguaje)

mel
Veteran

Nov 7, 2010, 8:02 PM

Post #6 of 20 (22860 views)
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Re: [lonly] RCA D56W20 / ITC222 3 Green blinks but won't power on. Flyback? [In reply to]	Can't Post

Check the PC board around the flyback for microscopic cracks. The drop may have been just enough to crack the board and sometimes these types of cracks will cause an intermittent condition or later lead to a complete failure.

(This post was edited by mel on Nov 7, 2010, 8:06 PM)

lonly
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Nov 7, 2010, 9:25 PM

Post #7 of 20 (22853 views)
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Re: [mel] RCA D56W20 / ITC222 3 Green blinks but won't power on. Flyback? [In reply to]	Can't Post

HI Markup thank for help I donot see craks on the board , do you know wat the blue component beside the flyback? is thes a fuse? # on board FL231 400MA 125v #on component52604 p621 lonj 630 r7

jts1957
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Nov 7, 2010, 10:03 PM

Post #8 of 20 (22850 views)
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Re: [lonly] RCA D56W20 / ITC222 3 Green blinks but won't power on. Flyback? [In reply to]	Can't Post

TV Forums: Search Results
Your search for fl231 returned 16 results.

http://www.tv-forums.com/..._username=&mh=25

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Location: Far, Far Away

lonly
New User

Nov 7, 2010, 10:35 PM

Post #9 of 20 (22842 views)
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Re: [jts1957] RCA D56W20 / ITC222 3 Green blinks but won't power on. Flyback? [In reply to]	Can't Post

thank :yes tha FL231 is fuse it is a bround color i get the board number wrong i tride to faund is the blue one beside to thos 3 fuse I ges the number on the board is CL301.- wat is the value of the one ? it is on the RCA model D40w20

jts1957
Veteran

Nov 7, 2010, 11:41 PM

Post #10 of 20 (22839 views)
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Re: [lonly] RCA D56W20 / ITC222 3 Green blinks but won't power on. Flyback? [In reply to]	Can't Post

CL301 0.01ufd 400Volts

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Location: Far, Far Away

lonly
New User

Nov 8, 2010, 12:06 AM

Post #11 of 20 (22833 views)
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Re: [jts1957] RCA D56W20 / ITC222 3 Green blinks but won't power on. Flyback? [In reply to]	Can't Post

CL301 0.01ufd 400Volts .- do thes work like fuse? i gat to heave 400v on each end?
thank for help

jts1957
Veteran

Nov 8, 2010, 12:41 AM

Post #12 of 20 (22831 views)
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Re: [lonly] RCA D56W20 / ITC222 3 Green blinks but won't power on. Flyback? [In reply to]	Can't Post

Search Engine = "capacitor"
Search Engine = "fuse"

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Location: Far, Far Away

lonly
New User

Nov 17, 2010, 5:01 AM

Post #13 of 20 (22769 views)
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Re: [jts1957] RCA D56W20 / ITC222 3 Green blinks but won't power on. Flyback? [In reply to]	Can't Post

thes component heave 745v in the midle pin but the oder thow pin du not heave v.- can you talkmy if it bad? i post picture here it is the one on the hitsink http://picasaweb.google.com/...6115/RCAD40W20ITC222# sorry i dono see a number close to it to pointe

lonly
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Nov 20, 2010, 6:15 AM

Post #14 of 20 (22751 views)
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Re: [lonly] RCA D56W20 / ITC222 3 Green blinks but won't power on. Flyback? [In reply to]	Can't Post

I get Itc222 Dead set troubleshooting thank to repair man .- after i check the fuses no one open the troubleshooting said

measure the +1.8Vs supply at IP551 on the SSB board: my cuestion is do thes need to be +1.8vs exacly ? my is over 4v do thes is normal ?

jts1957
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Nov 20, 2010, 7:21 AM

Post #15 of 20 (22749 views)
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Re: [lonly] RCA D56W20 / ITC222 3 Green blinks but won't power on. Flyback? [In reply to]	Can't Post

If your car battery (12 volts) measured approximately 24 volts, would YOU consider THAT a "problem?"

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Location: Far, Far Away

(This post was edited by jts1957 on Nov 20, 2010, 7:21 AM)

lonly
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Nov 20, 2010, 5:54 PM

Post #16 of 20 (22742 views)
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Re: [jts1957] RCA D56W20 / ITC222 3 Green blinks but won't power on. Flyback? [In reply to]	Can't Post

If your car battery (12 volts) measured approximately 24 volts, would YOU consider THAT a "problem?
---------------------------------------------------------------------------------------------------------Ye it is a problem, car need 12v not 24v.- now to the tv they call thes a 1.8v wen i get measured it was 3.68v it was not a normal to my if it called 1.8v tha it wat it need to be now is you cuestion answer is tha it no normal the 3.68v on thes one .- is the 1.8v bad? or is anoder component send to much power to the 1.8v stby voltage?

jts1957
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Nov 20, 2010, 7:37 PM

Post #17 of 20 (22741 views)
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Re: [lonly] RCA D56W20 / ITC222 3 Green blinks but won't power on. Flyback? [In reply to]	Can't Post

If 3.68v is OUTPUT pin - what is INPUT pin?
If both SAME - regulator most likely bad.

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Location: Far, Far Away

lonly
New User

Nov 21, 2010, 12:15 AM

Post #18 of 20 (22734 views)
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Re: [jts1957] RCA D56W20 / ITC222 3 Green blinks but won't power on. Flyback? [In reply to]	Can't Post

If 3.68v is OUTPUT pin - what is INPUT pin?
If both SAME - regulator most likely bad.

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ok i read again separed, the right side heave 3.45 and the oder one none 0.00 idon't know wat side is input or output so were you see on the picture i post before the side to u right heave 3.45 the oder one 0.00.- it is bad can i get it from radioshark? wat is the number?

jts1957
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Nov 21, 2010, 1:31 AM

Post #19 of 20 (22731 views)
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Re: [lonly] RCA D56W20 / ITC222 3 Green blinks but won't power on. Flyback? [In reply to]	Can't Post

Page 10 in Training manual. Figure 6 shows IP551. Has a tab at top and three pins (center one cut off). Right = Input | center OR tab = Output | Left = Adjust/Gnd. If In & Out are same, part is bad. Remove IP551 and supply your own 1.8v on output foil pad to "prove."

Digikey or Mouser would be more likely than radioshack.

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Location: Far, Far Away

repairguy72
New User

Jan 30, 2011, 3:12 AM

Post #20 of 20 (22381 views)
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Re: [Pioneer621] RCA D56W20 / ITC222 3 Green blinks but won't power on. Flyback? [In reply to]	Can't Post

i am having very similar problems with;
RCA
Model - D56W20
Serial - D372C10YP
Chasis - ATC221
What was the last thing you ended up replacing, and did it fix?

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