Question about Toshiba 42H81 42" Rear Projection Television

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Toshiba 42h82 convergence resistor and pico locations

I need to know the number/letter locations of the convergence resistors and values and convergence picos if any for a toshiba 42h82

and is it ok to use stk392-150 to replace the stk392-110?

thanks The red convergence fails. It will not adjust up nor down. It will however adjust right to left. The outer edges of the screen are more distorted than the middle of the screen.

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Yes better.  you need schmatic. servicemanuals.net.

Posted on Dec 13, 2008

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I replaced my convergence chips and I still have a convergence problem. Its not as bad but I still cant line up the blue convergence cross exactly


Sounds like your over half way there lol..
You now need to check the resistors positioned near the convergence ic's. They are your likely problem and go bad often when the ic's fail.

They are normally about 2watt and the values will vary but normally are like .10 ohms to 1 ohm.
I cant find a schematic to give you the exact values and locations but if these resistors measure off value at all you need to replace them with the exact value of the originals.

Heres a link to resistor color code guides just in case the value numbers are not printed on the resistors
http://www.dannyg.com/examples/res2/resistor.htm

Good Luck!!!

Nov 24, 2010 | Panasonic PT-53WX42 53" Rear Projection...

1 Answer

Toshiba 42H82 Blue raster is bowed to the right in the middle to the rt. The auto convergence give an error.


You have convergence output failure. The output ICs will need to be replaced and possibly a small component like a resistor or two as well. Expect to pay a service company $350-$450 to resolve this.

michtech

Feb 16, 2009 | Toshiba 42H82 42" Rear Projection...

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Mitsuibishi WS65809


The only items on your set that should need replacement would be both convergence IC IC801 and IC802 which are both STK392-570 and you will also need to change the two 5 Amp pico fuses which are F9A04 and F9A05 they are both % amp pico fuses. All parts are located on the center Board

Oct 23, 2008 | Projection Televisions

1 Answer

Toshiba 42h82 convergence resistor and pico locations


(6) 1.8 ohm 1watt metal film resistors for R7711, R7716, R7721, R7726, R7731 and R7736 yes the STK 392-150 will work fine.

Sep 24, 2008 | Toshiba 57H82 57" Rear Projection...

1 Answer

Question regarding toshiba 42h82 not 42h81


This is like a quiz right?? Let's see ;;;;;;; by convergence resistors I assume you mean the yoke return resistors out in front of the amps. There are 6, in the 2.2ohm 1w range, easy enough to find. The value of the convergence amps, that unit uses two stk392-110 Sanyo original Ic's rated at 6amps. You can use stk392-150's or stk392-180's just a higher amp rating. The two pico fuses in that circuit are F851 and F852 respectively.
Hope I get an "A"
Bill

William Rayburn, CET
Premium Technologies
PO Box 442
Long Beach, WA. 98631
360-642-4993

Sep 24, 2008 | Toshiba 42H81 42" Rear Projection...

1 Answer

Trying to find the fuse and resistor locations


did you replace the picos and check the 4.7 ohm resistors / Thats usually whats wrong when the old ICs go out they take the picos and often some of the resistors as well.

Sep 22, 2008 | Sony KP-57WS500 57" Rear Projection...

1 Answer

Samsung HCN4226 Convergence.


Did you remove one side of the resistors from circuit to check them? If you leave them in circuit a blown resistor will test good as it will read the resistance from the surrounding resistors. Usually its the 3.9 ohm resistors identified bu the bands orange,white ,gold and red. and also the 150 ohm identified by the bands brown, green, brown and gold

Jun 23, 2008 | Projection Televisions

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Projection tv toshiba 43A9UE convergence problem


I would advise you to check the low values resistors around the convergency circuitry as well the fuse resistors and micro or pico fuses as well.

Feb 09, 2008 | Projection Televisions

2 Answers

Pico/ Resistors what are these??


Pico means small and these look like little small resistors, but don't have stripes like resistors, just part numbers. They should measure as a dead short and be in the immediate vicinity of the STK's

Jan 03, 2008 | Samsung HCN5527W 55" Rear Projection...

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Convergence? not sure, check these pictures...


Check Convergence IC's for cold solder joint pins. Also check the resistors in front of the IC's, they may have smoked or changed value. Replace IC's if you see burnt or discolored resistors.

Jul 03, 2007 | Samsung HCM4215W 42" Rear Projection...

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