Question about JVC AV-56WP30 56" Rear Projection Television

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Hi Joe, av 56wp30 Question

Could you confirm for me the value of the resistor r 846 on the convergence board? I have the other two which are both 2.2 ohm, 2 watts, but I believe r 846 is 1.5 ohm, 2 watts.

(I'm replacing R 850, R 846, and R 842)

My email is storyboardninja@yahoo.com

Thanks

Drew

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  • Anonymous Dec 15, 2007

    Hi, I have a similar question. I need to replace R-862 when I replace the STK chips. It is currently reading "open". I believe it is a 1.5 ohm but can't tell for sure as it is charred a bit. Is this some sort of fusi-resistor or just a regular resistor and where can I get one?

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Yes R846 is a 1.5

Posted on Jan 22, 2008

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1 Answer

Have audio but no picture 51pp9303 replaced convergence chips and still same problem


Check all the low value resistors that are 1/2 watt around the chips--look for any slightly discolored-----most will be between 1.8 ohms and 5.6 ohms---often a bad chip will take one out---protection

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Wont turn on


You have one of two problems. The first may be a bad convergence board. This is the most common problem. Your vertical ICs which are STK-392-110 are bad. Replace these and inspect the low ohm 2 watt resistors. These are usually valued at under 10 ohms. In this case I believe they are at 6.8 ohms at 2 watts. This board is the one with your RF connectors and RCA jacks. The second problem would be the small signal board. To find out if this is bad....unplug your TV for about a week, and then plug it in and turn your TV on. If you experience a good picture with sound for a few seconds...it is the small signaled board that is bad(ssb). If this second problem is true...you can expect to pay $290.00 or more for this part. I would go with the first option described. See" TVRepairKits.com" for repairing the convergence board. Thanks for asking and show a few hands of support!

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1 Answer

Hitachi 61swx10b HDTV - Convergence problems. User 'gdroukas' mentioned in a post that it is probably the convergence amps and a few resistors that have changed value. Can anyone be a bit more specific? ...


Convergence ICs are Big Black ICs and will have the part number on them. STK392-110,
upgrade to 120s or 150s better ICs.
Resistors to replace are RK42 3.3ohms, RK46 1.8 ohms, RK50 2.7ohms,RK54 1.5, RK58 3.9 ohms. RK62 2.2ohms
Mats Electronics has STK ICs 1-800-628-1118 order convergence Kit that comes with resistors.
ACME has the Convergence resistors they must be 1 watt resistors 1-800-575-9833

Let me know if you need any more help Thank You.

Jan 13, 2011 | Televison & Video

1 Answer

Hitachi 61UWX10BA RPTV Convergence Repair


All of the resistors that fail are very low reading ones---like RK54(1.5 OHM-1 WATT) RK50(2.2 OHM 1 WATT) AND RK58(2.7 OHM 1 WATT)

These are not large resistors--all have location numbers on top of the board under them---most of the protection ones will begin with RK----check them like a fuse--they rarely go off value and if no reading across them they are bad---

There will be some higher value resistors like 150 or 220 ohm----never seen one of those bad.

Sometimes you just have to check them all and if they are good replace the chips and see what you have.

Do not forget to apply heat sink compound to the new chips before you install them(remove any old grease first from the heat sink.)

Good soldering is important here.


SD TECH

Oct 28, 2009 | Hitachi 53UWX10B 53" Rear Projection...

2 Answers

RK46 BURNT CANNOT SEE COLORS ONLY 2 STRIPS DARK AND 2 STRIPS LIGHT. WHAT IS THE OHM VALUE AND DO I INSTAL GOLD STRIPS TOWARDS IC OR AWAY. HATACHI 43FWX20B DP24 JOE


rk46 is 1.8 ohm resistor---rk54 is the same value, rk 62 is 2.2, and Rk 42 is 3.3 ohm. It does not matter which direction it is installed---it is a resistor


If you have any questions feel free to let me know.


SD TECH

Oct 08, 2009 | Televison & Video

1 Answer

I just replaced the convergence board on my JVC AV-56WP74, but the red still won't line up. Are there other parts that should be changed?


you also need to check and replace low value resistors in that circiut.they are all 1 watt,usually they get discolored when stressed.R842 2.2 ohm,R854 and R846 1.5 ohm,R850 2.2 ohm,R858 3.3 ohm,R862 1.8 ohm.they must be the exact value available in MD from surburban electronics.please note stk392-110 upgrade to stk392-150 for future referance.ONCE AGAIN CHECK ALL LOW VALUE RESISTORS

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1 Answer

I need to identify the parameters (rating) of a resistor for a Panasonic PT53WX53G projector big screen tv. It got hot so I can not see the color codes on it. This resistor glows red when TV is turned...


The resistor you see is a 2.2 ohm 2 watt resistor and is part of the convergence circuitry. I would replace R7011. 7012, 7013, 7014, 7015 & 7016 (all the same value) and the 2 STK392-110 Convergence ICs. This should fix your problem. You can find kits on-line for around $45 with the IC's and resistors together.

Nov 26, 2008 | Panasonic PT-53WX53 53" Rear Projection...

2 Answers

Hitachi


They have it, they just list it as a 1-4 watt resistor, just order two of the 1-4 watt resistors and they will send a order confirmation inquireing which rating you need for those two items within minutes of your order.

Jul 16, 2008 | Hitachi 57F500 57" Rear Projection...

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Question regarding convergence resistors


yes those two resistors are also 3.9ohm 2watt 5% resistors

May 27, 2008 | Zenith R40W46 40" Rear Projection...

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Hitachi 53uwx10b


Hitachi has created a repair kit part# X480293 for this problem. It includes: (2)STK392-150 convergence ic's,resistors RK42 = 3.3 ohms,RK46 = 1.8 ohms,RK50 = 2.7 ohms,RK54 = 1.5 ohms,RK58 = 3.9 ohms,RK62 = 2.2 ohms,all 1 watt resistors.

Aug 20, 2007 | Hitachi 53UWX10B 53" Rear Projection...

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