RCA D52w20 on ITC222 Chassis


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RCA D52w20 on ITC222 Chassis

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countxero
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Oct 19, 2010, 7:36 AM

Post #1 of 14 (6050 views)
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RCA D52w20 on ITC222 Chassis	Can't Post

Well I'll start by saying that I found this tv by the curb. I have been able to fix a few in the past. I have basic soldering skill. The television is a d52w20 and has the famous 3 blinks on the power light, no sound, no picture. I have replaced capacitors cp114, cp120, cp135, cp130, cp150, I also replaced the HOT transistor 2sc5588 and I also checked the fuses next to the flyback and re-soldered the flyback joints. This television still blinks three times when I try to turn it on.

I am running out of ideas. I read that Cl031 and Cl032 need to be re-soldered as well. I have not done this. I was hoping to get some advice or some direction to go with this before I junk the TV or take it to the repair man. Any help would be very appreciated. I hope to hear from you fellas soon. Thanks in advance for you help.

jts1957
Veteran

Oct 19, 2010, 8:06 AM

Post #2 of 14 (6049 views)
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Re: [countxero] RCA D52w20 on ITC222 Chassis [In reply to]	Can't Post

Check for deformed sockets and plugs/not seated correctly ribbon cables to convergence. Wink

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Location: Far, Far Away

countxero
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Oct 19, 2010, 9:14 AM

Post #3 of 14 (6046 views)
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Re: [jts1957] RCA D52w20 on ITC222 Chassis [In reply to]	Can't Post

I did. The connectors from deflectiion board to signal board look good. I did order new cables though. The plugs and what not on the convergence board seem good as well. I did read that replacing cp110 might fix the problem but it wasn't obviously vented. I will replace cp110 and see what happens, but I have my doubts. If anyone has any ideas or can tell me what what else to try I will give it a shot. I was trying to avoid having to test component after component, but it looks like that's what I will end up doing. Im open to check or replace any other common failure related to the three blink issue. Thanks for your input. Keep ideas coming. Thanks again.

(This post was edited by countxero on Oct 19, 2010, 9:28 AM)

jts1957
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Oct 19, 2010, 1:48 PM

Post #4 of 14 (6040 views)
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Re: [countxero] RCA D52w20 on ITC222 Chassis [In reply to]	Can't Post

Was HOT transistor defective? Set has a history of needing flyback.

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Location: Far, Far Away

countxero
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Oct 19, 2010, 5:34 PM

Post #5 of 14 (6036 views)
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Re: [jts1957] RCA D52w20 on ITC222 Chassis [In reply to]	Can't Post

To be honest I didn't test the original transistor. The thermal compound was not making contact with the heat sink so I assumed the worst. I can tell u that I attempted to discharge the flyback and got nothing. I don't know if the flyback holds a charge indefinately or not.

countxero
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Oct 19, 2010, 9:26 PM

Post #6 of 14 (6032 views)
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Re: [countxero] RCA D52w20 on ITC222 Chassis [In reply to]	Can't Post

Okay. I replaced CP110 220uf@200V. No dice. BTW radio shack sucks as far being a source of electronic components. Almost everything I have needed had to be ordered. This beginning to get frustrating.

jts1957
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Oct 20, 2010, 1:23 AM

Post #7 of 14 (6027 views)
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Re: [countxero] RCA D52w20 on ITC222 Chassis [In reply to]	Can't Post

Do you still have the transistor to test?

CRT can hold a charge, not the flyback.

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Location: Far, Far Away

countxero
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Oct 20, 2010, 1:54 AM

Post #8 of 14 (6023 views)
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Re: [jts1957] RCA D52w20 on ITC222 Chassis [In reply to]	Can't Post

Yes I still have it.

countxero
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Oct 20, 2010, 2:07 AM

Post #9 of 14 (6022 views)
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Re: [countxero] RCA D52w20 on ITC222 Chassis [In reply to]	Can't Post

I can't believe I replaced all these parts and still getting the same three blinks.

jts1957
Veteran

Oct 20, 2010, 4:10 AM

Post #10 of 14 (6019 views)
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Re: [countxero] RCA D52w20 on ITC222 Chassis [In reply to]	Can't Post

Google if you don't know how test it.

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Location: Far, Far Away

countxero
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Oct 21, 2010, 1:14 AM

Post #11 of 14 (6012 views)
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Re: [jts1957] RCA D52w20 on ITC222 Chassis [In reply to]	Can't Post

Transistor tested good. Now what?

jts1957
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Oct 21, 2010, 3:10 AM

Post #12 of 14 (6007 views)
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Re: [countxero] RCA D52w20 on ITC222 Chassis [In reply to]	Can't Post

http://elektrotanya.com/...ls.pdf/download.html

Chew on this awhile. Wink

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Location: Far, Far Away

(This post was edited by jts1957 on Oct 21, 2010, 3:11 AM)

lonly
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Nov 18, 2010, 4:27 AM

Post #13 of 14 (5955 views)
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Re: [jts1957] RCA D52w20 on ITC222 Chassis [In reply to]	Can't Post

trade to dowload the service from the link I get thes http://elektrotanya.com/cgi-bin/download2.cgi

jts1957
Veteran

Nov 18, 2010, 8:00 AM

Post #14 of 14 (5950 views)
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Re: [lonly] RCA D52w20 on ITC222 Chassis [In reply to]	Can't Post

Pressing on the circle with the arrow pointing down towards the TV just worked fine for me. Perhaps you're doing something wrong (or maybe they just don't like you)? Wink

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Location: Far, Far Away

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