Pioneer SD-P5053 picture problem


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Pioneer SD-P5053 picture problem

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pclancey
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Oct 4, 2003, 10:25 AM

Post #1 of 39 (4638 views)
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Pioneer SD-P5053 picture problem	Can't Post

I have a 1991 Pioneer SD-P5053 Projection TV. It now has a black band across the bottom. The picture sometimes also appears to be strunk. Open the tv, the lights seem to be hitting the mirror high. Any suggustions on how to adjust this.

pclancey

Guest
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Nov 7, 2003, 12:06 PM

Post #2 of 39 (4554 views)
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Re: [pclancey] Pioneer SD-P5053 picture problem [In reply to]	Can't Post

Replace the Electrolytic caps in the Vertical Circuit. An ESR will point to the bad ones, if not available replace the caps around the Vertical IC with the same reference numbers (i.e. for 400 series it would be like C441, C452, C465 etc.).

greg
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seattleprintshop.com

Nov 8, 2004, 7:26 PM

Post #3 of 39 (4037 views)
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Re: [pclancey] Pioneer SD-P5053 picture problem [In reply to]	Can't Post

did you get the tv fixed i have the same model, same problem?

Guest
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Nov 8, 2004, 11:57 PM

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Re: [greg] Pioneer SD-P5053 picture problem [In reply to]	Can't Post

No.
I gave TV away.

In Reply To

mfavitta
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Nov 15, 2004, 10:50 PM

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Re: [Guest] Pioneer SD-P5053 picture problem [In reply to]	Can't Post

Add me to the club of folks with two inches of black bar at the bottom of the screen and the top few inches stretched/distorted on a SD-P5053K. I messed with the vertical size and can fill the screen, but it pushes more picture off the top. There already seems to be picture running off the top (inside the cabinet view), I assume from the stretched top part of the picture. So it seems there is a real problem with the video deflection circuitry.

I'm also annoyed that the Pioneer service manual for the 5053 doesn't cover two thirds of the electronics in that model. It references the pages in the SD-P4053 service manual for everything I need to look at..... Any one have this manual so that I can make sure it completes the story before I throw away anymore money?

(This post was edited by mfavitta on Nov 15, 2004, 10:53 PM)

mfavitta
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Nov 23, 2004, 2:53 PM

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Re: [mfavitta] Pioneer SD-P5053 picture problem [In reply to]	Can't Post

The entire VIDEO TUNER ASSY (part num AWV1175) which contains the video deflection section (as well as the tunner and control sections) is still available for the SD-P5053K from Pioneer for about $230 with shipping. I'm going to first give repairing the board a shot (replacing caps) if I can get a hold of the needed SD-4053 service manual as they are out of print from Pioneer, but seem to be available as copies from third parties. If that doesn't work out, then the big decision is to decide if it's worth the $230. The set is in great shape other than this annoying problem, so will probably go that far to fix. The fact the board is one of the few boards still available from Pioneer and that they want the old one back ($150 core charge) tells me that they expect to be selling more than one of these.....

(This post was edited by mfavitta on Nov 23, 2004, 3:03 PM)

mfavitta
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Dec 13, 2004, 10:32 PM

Post #7 of 39 (3815 views)
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Re: [mfavitta] Pioneer SD-P5053 picture problem [In reply to]	Can't Post

I got my SD-P4053 manual so I can try to fix the SD-P5053..... Luckly the the verticle drive is not super complicated and my EE friend has lots of vacation time saved up so was willing to provide ample tech advice. Anyway, we thought for sure replacing the two big electrolytics C183 and C184 - 2200 uf/16v (which I just happened to have two of from 15 years ago when it used to be practical to build stuff) in the V drive amp would solve the problem, but no dice. No effect at all. Now I need to order parts from Pioneer, which is $8.16 a clip for shipping, so I''ll get all the parts that seem likely culprits. The order of likelyhood seems to be the low side of the amp, darlington Q129, then the top side Q130, then other stuff such as Q126, and two other electrolytics, C172 and C177. Buying the video-deflection board for $230 doesn't seem like a good idea as it replaces a pile of stuff that is working fine that would need to be adjusted/calibrated. So, replacing components seems to be cheaper and still may be quicker time wise. That is if the above parts fix it....

Zhenyan
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Dec 22, 2004, 4:31 PM

Post #8 of 39 (3768 views)
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Re: [mfavitta] Pioneer SD-P5053 picture problem [In reply to]	Can't Post

I got the same problem with the pinoneer SD-P5053. I've been researching on the internet, seems like this problem is common for this model. However, nobody have actually solve the problem. I'm wonerding did anybody here actually solve the problem? and where can I get the service manual? Thank you.

mfavitta
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Dec 22, 2004, 5:57 PM

Post #9 of 39 (3765 views)
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Re: [Zhenyan] Pioneer SD-P5053 picture problem [In reply to]	Can't Post

The easy question. The service manuals are available from www.servicemanuals.net for about $35 including shipping. They are copies, but the quality is good enough to get the job done. The only manual still available from Pioneer (parts.pioneerelectronics.com) is the SD-P5053 service manual, but that's not what you need. The SD-P5053 is covered by two manuals with 90% of what you need in the manual for the SD-P4053. The only things in the manual for the SD-P5053 are things that are not the same as the SD-P4053. If you just want the schematic for the video-deflection board I can send it to you as 4 jpegs as I scanned it in for my own use. Usable, but a copy of a copy.....

I'm sure Pioneer knows what the problem is given the frequency and that the problem is identical in symptoms each time, but it seems to be a big secret for everyone else. The problem for me is it's not what the odds would point to looking at video deflection theory of operation. I just replaced the 3 transistors in the vertical drive amp assuming one was leaky and causing the problem. Replacing the two electrolytics and the 3 transistors are the "obvious" potential culprits. Now its down to trying to figure all the not likely things that could cause this..... I'll have time over the holidays to mess some more with this, but I'm no longer sure this story will have a happy ending.

Zhenyan
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Dec 22, 2004, 6:55 PM

Post #10 of 39 (3760 views)
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Re: [mfavitta] Pioneer SD-P5053 picture problem [In reply to]	Can't Post

That will be great if you can send me the schematic for the video deflection board. My e-mail address is zyh100@psu.edu. Thank you very much for your help.

mfavitta
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Dec 25, 2004, 5:45 PM

Post #11 of 39 (3725 views)
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Re: [Zhenyan] Pioneer SD-P5053 picture problem [In reply to]	Can't Post

Success, problem fixed. The rest of my parts arrived from Pioneer (I wish these arrived before the transistors as it would have saved me much time and frustration) so I replaced the remaining 2 electrolytics that were on my list (C172 and C177) and much to my surprise, the problem was actually fixed. I don't know which one was bad as I replaced them both at the same time and chose not to mess around anymore once the set worked. Even with Pioneers big mark up they are $1.95 each, so you can afford both. If anyone figures out which one, let us know......

One reason I quit while I was ahead, is that even using my Weller controlled output soldering station, one small trace for each capacitor "disintegrated" in the desoldering operation, so I had to jury rig the leads down the trace to another component connection point to solder them in. So be careful and be prepared to deal with it if it happens. Other than that it's a simple operation. Unhook all the connectors to stuff off the service chassis, remove the one screw that anchors the service chassis, and slide it out enough to work on. I didn't disconnect the two red high voltage wires (be sure to note how these are routed, as they need to go back the same way so they aren't too close to anything grounded) as they were long enough to let me flip up the chassis to access the solder side. I did not need to remove the board from the chassis frame. You will need the video deflection board parts list and board layout, which I can scan and send if someone needs them.

So other than time, my total cost was about $100, for two service manuals ($70) and a bunch of potential problem parts ($30). Folks with the tools and know how should be able to fix this problem for under $10, so hopefully we'll keep a few of these sets out of the landfills. All's well that ends well. The only unhappy ones are my kids, as no new high definition TV for Christmas this year. Happy Holidays!

Zhenyan
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Dec 25, 2004, 6:08 PM

Post #12 of 39 (3722 views)
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Re: [mfavitta] Pioneer SD-P5053 picture problem [In reply to]	Can't Post

So All I need to do is to change the c172 and c177 on the video deflection board? I'm wondering where can I order the part from, and I can't find the location of those electrolytics. Thank you very much for your help. Merry Christmas!

mfavitta
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Dec 26, 2004, 6:55 PM

Post #13 of 39 (3716 views)
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Re: [Zhenyan] Pioneer SD-P5053 picture problem [In reply to]	Can't Post

Yes. C172 is an 0.82uf 50v electrolytic Pioneer part number ACH-388 and C177 is an 10uf 50v electrolytic Pioneer part number CEHAQ100M50. Both are available from Pioneer for $1.95 each plus shipping & handling at http://www.pioneerelectronics.com/pna/service/support/article/top/0,,2076_3143,00.html or To order by phone, Monday thru Friday: 6:00 AM to 4:30 PM PST at (800) 421-1404.

These 2 capacitors are right next to each other just inside the large "L" shaped heatsink that's closed to the rear of the TV (closest to you as you take the back off) on the right side of the video deflection board. They are near C184, the much larger 2200uf electrolytic, which is also just inside the heatsink, at the leftmost, closest to the back of the set, end of the heatsink. I'll send you a jpg of the component and foil side of the board. If you enlarge the image you'll see I have circled C172 and C177.

(This post was edited by mfavitta on Dec 27, 2004, 4:41 PM)

dmoo2
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Jan 19, 2005, 11:56 PM

Post #14 of 39 (3603 views)
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Re: [mfavitta] Pioneer SD-P5053 picture problem [In reply to]	Can't Post

Can you also send me the schematics? send to delynnmoore@hotmail.com. thank you

Zhenyan
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Jan 26, 2005, 11:44 PM

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Re: [dmoo2] Pioneer SD-P5053 picture problem [In reply to]	Can't Post

It is the two capacitors problem. My TV is working great now, thanks to mfavitta.

RSloan
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Dec 6, 2006, 12:21 AM

Post #16 of 39 (1683 views)
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Re: [mfavitta] Pioneer SD-P5053 picture problem [In reply to]	Can't Post

Could I please get the schematics from someone? Thank you so much!

Zhenyan
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Dec 6, 2006, 12:58 AM

Post #17 of 39 (1681 views)
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Re: [RSloan] Pioneer SD-P5053 picture problem [In reply to]	Can't Post

Where shall I send it to?

RSloan
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Dec 6, 2006, 9:55 AM

Post #18 of 39 (1674 views)
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Re: [Zhenyan] Pioneer SD-P5053 picture problem [In reply to]	Can't Post

They can be sent to rcsloan@bellsouth.net
Thank you!

mfavitta
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Dec 9, 2006, 6:27 PM

Post #19 of 39 (1657 views)
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Re: [RSloan] Pioneer SD-P5053 picture problem [In reply to]	Can't Post

I checked and I did save the jpegs I made of the schematic and foil patterns if you haven't already gotten it from Zhenyan.

mickdman
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Jan 10, 2007, 1:29 AM

Post #20 of 39 (1569 views)
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Re: [mfavitta] Pioneer SD-P5053 picture problem [In reply to]	Can't Post

In Reply To

Can you please send me a copy of the schematics also and any pics you might have thanks to mickdman@comcast.net

(This post was edited by mickdman on Jan 10, 2007, 1:30 AM)

mfavitta
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Jan 11, 2007, 1:44 AM

Post #21 of 39 (1555 views)
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Re: [mickdman] Pioneer SD-P5053 picture problem [In reply to]	Can't Post

I'm out of town this week. I'll try to remember to send the info this weekend when I have access to my home computer.

jschuholz
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Mar 9, 2007, 12:51 PM

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Re: [mfavitta] Pioneer SD-P5053 picture problem [In reply to]	Can't Post

I have the exact same set and problem. Appreciate a copy of deflection board schematic and pics. Did U have to re-alighn set after cap replacement ? Thanks, J ajshoe@cinci.rr.com

mickdman
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Mar 10, 2007, 11:58 PM

Post #23 of 39 (1409 views)
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Sorry to bother you Can you please send me the pics and schedmatics thank you mickdman@comcast.net

mfavitta
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Mar 11, 2007, 1:46 AM

Post #24 of 39 (1403 views)
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Re: [jschuholz] Pioneer SD-P5053 picture problem [In reply to]	Can't Post

I sent the copy of deflection board schematic and pics to you and mickdman@comcast.net. Nothing to re-align. Replace the caps and all should work wonderfully. Still going strong 2 years later, still much to the chagrin of my sons.

jschuholz
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Mar 11, 2007, 9:46 PM

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Re: [mfavitta] Pioneer SD-P5053 picture problem [In reply to]	Can't Post

Mike,
replaced C172, C177. Unfortunately now I have no picture ! Before set (tubes would come on) and would display convergence problem on screen with menu. I hear a click when power button hit but thats it - tubes never come on. By chance - do U have the service manual ? If U have in file format - could U send it to ajshoe@cinci.rr.com. If paper copy - can compensate U. Without manual this set is dead and I have looked on web to no avail. Any recommendations would be appreciated. Thanks, John

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