Question about Samsung HCN529W 52" Rear Projection Television

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Samsung HCN529W Burned Resistors

I have a Samsung HCN529W TV (BH52Q7 chassis number). Two resistors, R858 and R859, are burned on the main board. I cannot find a schematic anywhere for this set. Can somebody tell me the value of both these resistors so I can replace them? Alternatively, if somebody can tell me where to find a schematic (free) for this set, I would be extremely grateful.

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0.47 ohm, 1 watt fusible resistor

Posted on Jan 13, 2010

  • tsmith35 Jan 13, 2010

    0.47 ohm, 1 watt fusible resistor




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1 Answer

Should i change a burned resistor for a better one?


It sounds like you have other problems that're causing that resistor to get too hot, Angie. Carefully check for any other components that are also getting hot when that resistor gets hot.

Aug 11, 2014 | Philips 42PFL5603D/F7 LCD TV

1 Answer

Should I,change just the resistor that is burned?


Normally if a resistor has burned you will need to locate the cause or a replacement resistor will surely blow instantly in most cases? Is your model the HD52W59 RCA with the ITC222A chassis? If so let me know the resistor board location number such as RP256 etc.

Oct 15, 2011 | RCA HD52W59 HDTV Projection Television

1 Answer

The convergence board has a +20V & -20V input. The +20V is OK, but the -20V measures about 4.5V when the cable is disconnected from the convergence board. I could not find any blown fuses but R858...


Replace R858 and R859...They also go bad frequently when the STK chips fail.

For everyone else...

All projection TV sets have two very common problems. One is convergence ( 3D/Warped video or dead set) the other is CRT fluid ( Dull Video). Here are more details and solutions for both.

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. In some cases the TV will also not show any video. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....


  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
  • TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some pics of convergence problems.


7859b01.jpg

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Common Problem #2) CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

578ba6c.jpg
TV set after fluid change

65af323.jpg

69189a5.pngSOLUTION

You can get the correct parts, step by step photo instruction guides, and support from www.TvRepairKits.com or click here

Feb 23, 2011 | Akai PT5598HD 55" Rear Projection...

2 Answers

Convergence problem


There are 12 resistors all of them are 6.8 ohm 1watt resistors they are located in front of the ICs heat sinks at board location numbers 3149 -3160 they will all be identical and are grouped in sets of two side by side.

Jul 31, 2010 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Need to replace 2 burnt resistors in my Samsung hcr4755w widescreentv,how do i find what value resistors they are, where to findfreeschematic for this TV?


You wont find a free manual give me the R #s labeled on the board where the resistors are located. I hope you have have found out why the resistors burned ...first!

Jun 04, 2010 | Samsung Televison & Video

1 Answer

Burned resistors r319,r320


ampmann,

hi mate, i might be able to help you but i need to know the exact model number and brand of your dvd player.kindly email it to workshop.fungkuei@vanuatu.com.vu

cheers,
markiez23

Jan 15, 2009 | Panasonic Televison & Video

1 Answer

TV will not turn on


Replace shorted Q431,can use a 2sc3998, open r448 .47ohm resistor. after you get set on beware of convergence ic's may have been shorted causing all the problems.Check r859 &r858 .47 ohm 1 wtt that supply - &+ 20 volts to convergence packs, if open replace packs & check low ohm resistors on convergence ,I found r2144 &r2145 open replaced & all systems go "good luck"

Dec 26, 2008 | Akai PT5598HD 55" Rear Projection...

1 Answer

HCM4215W convergence issue


mute 183 power.

You may have done alignment previously in service mode and not initialized or saved correctly. add/erase saves

The test for convergence ICs working is if the V and H can be adjusted for all colors in different picture quadrants. The adjustment may be so far off that it looks broken.

There may be low ohm resistors that have increased in value. Some Samsung chassis use low ohm resistors that have built in Zener diodes for stabilizing the voltage drop across the resistor. Replacing with ordinary resistors (as the schematic shows) may cause poor convergence that can be adjusted after warming up, but always varies noticeably when going from cold to hot.

Using the correct part number from Samsung will ensure that the right part is in place.

When 1 or 2 ICs fail with no resistor damage, only small or no adjustment is necessary (if the replacement ICs are well made and imitate the original). When resistors burn and are replaced, adjustment is required more often than not.

Call someone that has aligned and repaired numerous Samsung RPTVs and your problems will be over.

There is a list of repair techs on the Home Page. Projection Televisions

If you are in Calgary, call me.

easyab.

Jul 13, 2008 | Samsung HCM4215W 42" Rear Projection...

1 Answer

Need value of resistors R7A4 and R753 in a Gateway VX700 monitor. Chassis family V8705. Board bears the codes CT920A2600 and CT920A2600. The resistors are physically located around the high tension...


long time since i worked on one of those chassis but if i remember right there both 250k ohm 1/2 Watt carbon in series
but its more common for them to go open circuit if there burned you better check out the rest of the circuit around the LOPT stage

Feb 28, 2008 | Computers & Internet

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