View previous topic :: View next topic |
Author |
Message |
Guest
|
Posted: Thu Jan 10, 2008 4:10 am Post subject: Replaced convergence IC's and now a new problem Phillips 46& |
|
|
Hello all, I was recently given a Phillips 46PP9302 that had a convergence problem. The red was wavy and would not line up. After reading on this forum I decided to replace the two STK392-120 IC's to hopefully fix this.
At first I had a picture, but it still had the wavy lines. I was trying to adjust the yoke (sliders) and it seemed to get closer, but (this is in a timeframe of about 4 min) all of a sudden I lost the picture and I have a "chirping sound". I no longer have a picture and one of the IC's heatsinks was pretty hot.... What would it possibly be? Could I have gotten a bad IC? I bought these from matelectronics-which I figure is a good source....any help would be really appreciated as I don't know where to go. |
|
Back to top |
|
|
Guest
|
Posted: Thu Jan 10, 2008 5:36 am Post subject: Re: Replaced convergence IC's and now a new problem Phillips |
|
|
Anonymous wrote: | Hello all, I was recently given a Phillips 46PP9302 that had a convergence problem. The red was wavy and would not line up. After reading on this forum I decided to replace the two STK392-120 IC's to hopefully fix this.
At first I had a picture, but it still had the wavy lines. I was trying to adjust the yoke (sliders) and it seemed to get closer, but (this is in a timeframe of about 4 min) all of a sudden I lost the picture and I have a "chirping sound". I no longer have a picture and one of the IC's heatsinks was pretty hot.... What would it possibly be? Could I have gotten a bad IC? I bought these from matelectronics-which I figure is a good source....any help would be really appreciated as I don't know where to go. |
Ok...So I replaced the hot IC with one of the old ones and now I have a picture again. But The red still will not converge..so I'm going to switch it with the other old IC and start from there. I'll keep updating till I get it fixed....it's starting to pi@# me off and I'm not about to be beat. |
|
Back to top |
|
|
Guest
|
Posted: Thu Jan 10, 2008 6:16 am Post subject: Re: Replaced convergence IC's and now a new problem Phillips |
|
|
Ok...So I replaced the hot IC with one of the old ones and now I have a picture again. But The red still will not converge..so I'm going to switch it with the other old IC and start from there. I'll keep updating till I get it fixed....it's starting to pi@# me off and I'm not about to be beat.[/quote]
Alright.. after changing out the IC again with the other old one----yipppeee
she's a working now. Da@m chinese IC's (even though the look exactly like the originals). I will however order 2 more new IC's from a different source. |
|
Back to top |
|
|
minnie
Joined: 18 Aug 2005 Posts: 2880 Location: Hell
|
Posted: Fri Jan 11, 2008 12:59 am Post subject: |
|
|
You need to check the bias resistors around the IC's. I think there 1 ohm. There should be 6 resistors total. |
|
Back to top |
|
|
|
|
|
You can post new topics in this forum You can reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
|
eServiceInfo on FB -
Service Manuals Free Download -
Service Diagrams
Free TV Schematics Download -
HARDW.net -
Pinout Master -
Jabse Service Manual Search -
Jabse.InK -
onTap.bg
SnimkiOt.com -
Poblizo.com : пътешествия
Latest Service Manuals :
Sens Q20-2~3-BlockDiagram Samsung • 3740 Keithley • 05 Wiring Diagram Samsung • DoubleDefs.mesa Sep78 xerox • Installing-Bottom-Bezel-408 apple • Power Master FA 5 2 v3-2 . Various • SDI PDP 14992 Philips • 1960-04 Agilent • irf9610pbf International Rectifier • rn47a1 . Electronic Components Datasheet •
|