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Home | Panasonic | PT-51HX40 51 in. Rear Projection Television | PT-51HX40b BP819
Panasonic PT-51HX40 51 in. Rear Projection Television
Problem for Panasonic PT-51HX40 51 in. Rear Projection Television

PT-51HX40b BP819




By ladywinn on Dec 08, 2007

" "
I have replaced burt caps shorted NTE 2973Q 553, STK392-110 up grade with STK392-180s now having trouble with red and blue not locking in place .which resistors have changed in value i did have this its 4 of them 10ohms does anyone know R ____ etc.OR which ones should be replaced even if they read good ,i have replaced on some sets and it fixed them.
Comments:

Dec 23, 2007

- I found out resistors fine problem was i did not lock in convergence once alinement was done , when correctly locked in set now has great picture.when alinment is done press 7 then swap button,this locks in all alinements.
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Same Problem

Apr 15, 2008

-   Hello,
My PT-51HX40B convergence is shot. I replaced both STK391-110's with no chnage. I resoldered the amps and carefully reviewed all of the solder joints several times. I have +/-20v on the amps. I don't have a schematic, but I believe there should a 2.2-ohm 1-watt resistor on each inverting input to chassis gnd? I searched and have not found these resistors. Any help with a schematic or solution would be greatly appreciated. Could the new STK's I used be duds?
Thanks,
texasdan-   texasdan

Mar 04, 2008

-   wondering, replaced stk's and now after about 45 mins the converg goes all waked. used fan to cool but no help. what's this with pressing 7 and swap to lock converg? is this on the  tv remote? thnx!-   Guest

Solution #1

posted on Dec 09, 2007
Somewhat Helpful)

Terryfic
Terryfic

Rank: Guru  Panasonic Expert
Rating: 87%, 1721 votes
I have noted several times this statement...STK392-110
upgrade to STK392-180 or 150s.....my main OEM supply
house Andrews Electronics reports that is incorrect substitution
Best and only upgrade I use is -110 to STK394-160 Hitachi part
CZ 01341, Mfr actually Sanyo......List location and original part
number and sub you used so far for help-----.................T
Comments:

Dec 24, 2007

- Good report.....hope it holds up.........I didn't realize you were
skipping that important last step.....................T.
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Solution #2

posted on Sep 30, 2009
Not Rated)

texasdan
texasdan

Rank: Guru 
Rating: 93%, 36 votes
Only use the same part number when replacing convergence amps, or you will need to replace all of the power resistors with recommended values for the convergence amps subsituted.

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