Question about Panasonic PT-53WX42 53" Rear Projection Television

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Unit will not power up. No power light.

I replaced the two STK392-110 IC's and a 2.2 ohm resistor, (board was removed by someone else), after reassembling the unit it now does nothing. The original problem was the power light blinking three times. When I plugged the power in I saw no smoke, no spark, no problem. I have 120 VAC in and the fuse is not blown. I ordered the service manual but its not very helpful to me as, although I have done many board repairs, I am no TV tech. Is there a saftey switch or reset I may be missing? Any help would be appreciated.

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  • 5,138 Answers

Have you CK hori output Transistor and a1200pf 2kv capacitor small blue cap feeds off of hori output?

Posted on Feb 28, 2009

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Initial hdtv 262


If this is a projection TV, as it seems to be one in the FIXYA category, you are correct. The power supply is good. The first thing to inspect will be the convergence IC or ICS. These are located on the signal board, mounted on one or two large heat sinks(this board will RF and rca connections attached to it). Check the solder on these pins. You may as well replace the IC or ICs and any low ohm one or two watt resistors (resistors may be 1 to 10 ohms in value). This would be my first concern if I had this TV in my possesion! Thanks for asking.

May 25, 2013 | Projection Televisions

1 Answer

2.2 ohm resistor blowing after convergence repair


It might be the issue on the board. I would recommend you to show it to a repairman

Sep 07, 2008 | Panasonic PT-47WX49 47" Rear Projection...

1 Answer

Element tv


Once again, the power supply is good. The problem is in the signal board. The signal board has the RF and rca connections attached to it. Find the STK XXX-XXX IC or Ics (some have one, others have two). Replace these ICs and check the 1 or 2 watt low ohm resistors (1 to 10 ohms value) and replace as necessary! Wish this TV was in my possession! Thanks for asking.

May 25, 2013 | Projection Televisions

2 Answers

Can you tell me where the 2 Convergence IC's and the 12, 6.8 ohm 1 watt resistors are located in the Magnovox 51MP329H TV


When you remove the rear cover you will see the large green board on the left side. Note the two large aluminum heatsinks with the fins? The 2 Convergence Ics STK392-120 are attached to that heat sink the 12 6.8 ohm resistors are at board location 3149-3160 they are all the 6.8 ohm 1watt metal film resistor located near the Heat sink which has the two ICs.

Aug 25, 2011 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Mitsubishi WS-65611 IC's replaced


this set has a self diagnostic feature; when you turn it on and the green light goes out--push menu and device(or input) together for 5 seconds. the led for power should blink an error code. The most common is 2, pause and 2---this means something is shorted. If the set functioned before you changed the stk--you may have a new IC that is shorted--this IC is protected by two pico fuses usually marked as fao4 and fao5----they are about 3 inches behind the IC and are marked 5 a(they are green in color and do not look like fuses) also check all the 3.9 ohm blue resistors in front of the Ic--if any are white in the middle they are gone and the new IC got them. you did not remove the board? you tilted the entire chassis up to get at the IC? take a good look to make sure you did not pull any plugs loose---check for the error code first and let me know what it is. Best way to do this repair is to remove the entire board from the plastic frame---takes a little longer but is safer way to get it done. If one of the pico fuses is blown you will check it just like a regular fuse--an open fuse will suggest short and the set will shut down with 2, pause. 2 errror code.

Aug 18, 2009 | Mitsubishi WS-55809 55" Rear Projection...

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...

1 Answer

SAMSUNG HCM4215W Rear Projection HDTV shuts down


Low ohm resistors are open or poor solder connections on the bottom of a convergence IC.

You need to look at resistors in good light with magnifying glass. Bad ones may show as discolored or burnt.

The repair needs someone that has the schematic for the convergence cct, and can replace the burnt resistors or replace the whole convergence board.

http://calgaryconvergencerepair.weebly.com/index.html

If you are near Calgary, call me, if not, find someone that has done it before, preferably many times.

easyab

Aug 12, 2008 | Samsung HCM4216W 42" Rear Projection...

1 Answer

Problem with Samsung TV


SAMSUNG Convergence Problem


It looks like blue convergence. Look at menu, select convergence and see if blue top is bent down on convergence adjust screen. Probably won’t adjust.

Some Samsungs have convergence IC’s on a separate convergence board in the back of the TV. Others have the IC’s mounted on the main deflection board. Either way the board has to be removed to get at the dud IC’s and associated burnt resistors.

You remove the appropriate board, determine if any resistors are burnt or damaged, replace any burnt or out of tolerance resistors, replace 1 or 2 IC's and re-install the board.

Now you have to adjust it to look like new.

If the unit has not been misadjusted and everything is OK now, running the auto focus may put the picture back to it’s previous stunning quality, as it was before IC failed.

If after self or autofocus it is still misadjusted noticeably, try the customer convergence adjustments. Operators’ manuals are available on web through searching.

If convergence can not be adjusted properly, you messed up chip install or resistors may be wrong value or open; or it needs major adjustment.

If you live around Calgary, Alberta try me instead:

http://calgaryconvergencerepair.weebly.com/convergence-explanation.html


Or try to the find the repairperson part of this website (on the Homepage) and search postal code. Maybe you will be lucky and someone from your area is listed for Projection TV repair.

Most rookies doing this job will cause damage and not be successful. They will pay double for someone to fix their mess or end up scrapping the TV. It is not a simple task. It is more difficult than batteries on a remote.

Good Luck

easyab

Jun 06, 2008 | Samsung HCN4226W 42" Rear Projection...

1 Answer

Sony 7 blinks


6 times, Diagnosis: LOW B OCP/OVP (Overcurrent/over voltage). Possible causes: +5 line is overloaded. (A, B boards), +5 line is shorted. (A, B boards). Symptoms of the problem: No picture.
http://www.somelifeblog.com/2007/08/sony-tv-led-blinking-codes-what-does-it.html

also found this

CHASSIS: AX1/AX1X/RA6/RA6A
MODEL: KDP51WS550, KDP57WS550, KDP65WS550, KP46WT500, KP46WT510, KP46WT520, KP51WS500, KP51WS510, KP57WS500, KP57WS510, KP57WS520, KP65WS500, KP65WS510
SUBJECT: Picture gets bright then shuts down. After repairs tech noticed a mark was created on all 3 CRT's.
CAUSE: Found Video Output was defective causing the failure of the 200v line. 200 volt line has two fuse resistors R7301 (10 ohm 1/4w) on the CB Board. R8225 (1 ohm 1/2w) on the D board. R8208 (0.47 ohm 1/2w) also on the D Board. All three resistors are in series. One or all 3 could be open. After replacing 2 resistors and Video Output IC set returned to normal operation. CRTs will need to be changed due to phosphor damage. On Models KDP-51WS550, KDP-57WS550, KDP-65WS550 CB Board resistor is R9335 10 ohm 1/4w. D Board resistor is R6509. NOTE: This resistor may be a jump wire according to the schematic. Models: KP-51WS520, KP-57WS520 These models have a fuse resistor on all 3 CRT Boards. CB R9335 10 ohm 1/4w CR R9110 10 ohm 1/4w CG R9211 10 ohm 1/4w On the D Board R6509 is a jumper wire according to the schematic.

Dec 11, 2007 | Sony KP-65WS500 65" Rear Projection...

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