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ntehicks
Joined: 25 Mar 2009
Posts: 149
Location: Herriman, Utah
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 Posted: Fri Jun 04, 2010 4:33 pm Post subject: REPAIRED Panasonic PT-53WXD63G convergence out |
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This TV belongs to my neighbor. so I thought I would help him out and see if I could get it working for him. His kids would really like there video Game tv back.
I wanted to see if there is any other parts besides the SK chips that is recommended to be replaced?
thanks.
Last edited by ntehicks on Sat Jun 12, 2010 10:52 am; edited 1 time in total |
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ntehicks
Joined: 25 Mar 2009
Posts: 149
Location: Herriman, Utah
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| Posted: Wed Jun 09, 2010 9:33 pm Post subject: |
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| Ok I replaced the STK chips and I am unable to converge the red. the others are working ok. I turned off the tv and opened it back up one of the heatsinks is hot and the other is luke warm. does this mean I have a bad chip? |
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JTS1957
Joined: 21 Jan 2009
Posts: 1331
Location: Far, Far Away
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| Posted: Wed Jun 09, 2010 11:12 pm Post subject: |
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Bias resistors?
?O.K. / Open / Changed value?
| ntehicks wrote: | | I am unable to converge the red. the others are working ok. |
How were they working BEFORE the chips were changed? |
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ntehicks
Joined: 25 Mar 2009
Posts: 149
Location: Herriman, Utah
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| Posted: Wed Jun 09, 2010 11:28 pm Post subject: |
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| I have checked all of the 2.2ohm 82ohm and 120ohm 2 watt resistors in the area of the STK chips. the 82 and 120 show a dead short the 2.2 test good in circuit. I have floated one side on all of the resisters and they all test good. |
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JTS1957
Joined: 21 Jan 2009
Posts: 1331
Location: Far, Far Away
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| Posted: Wed Jun 09, 2010 11:42 pm Post subject: |
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| Were you "unable to converge the red, while the others worked ok" with the ORIGINAL chips installed? |
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kuhurdler
Joined: 28 Dec 2006
Posts: 2571
Location: Overland Park, KS
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| Posted: Thu Jun 10, 2010 7:56 am Post subject: |
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| check for solder splashes |
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ntehicks
Joined: 25 Mar 2009
Posts: 149
Location: Herriman, Utah
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| Posted: Thu Jun 10, 2010 8:35 am Post subject: |
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with the Original chips none of the Convergence would adjust. with the new chips the Red is the only thing that won't adjust. and I notice one of the stk's gets alot hotter than the other.
I have looked for solder splashes/bridges. I will double check this..and get back with you. |
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ntehicks
Joined: 25 Mar 2009
Posts: 149
Location: Herriman, Utah
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| Posted: Sat Jun 12, 2010 10:59 am Post subject: |
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| Thanks for all your help.. I noticed as I soldered back in place the one side of each of the resistors in the convergence section that the solder connections didn't look very good. Lots of cold solder joints. I re flowed and then put the boards all back in. Tested and convergence is now perfect. I think my neighbor will be happy. To test it out I watched the movie Avatar. This tv has a great picture. Once again thanks for your help.. |
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