Question about Samsung PCL545R 54" Rear Projection Television

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SP-54T5HP I have some tech background, i used to build large transformers, assemble the coils and cores for ETEL a Transformer company in NZ, assemble and fix pc's when i was bored, what would i need to repair my tv and are you able to guide me or should i just toss it out and start reading the news paper instead HAHA. So i need these STKs circuits, thanks resto15951.

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I have walked friends in 2 different cities, over the phone and thru email ,how to replace STKs. Not that big a deal. Let me know who the manufacturer is, date when made, STK numbers and of course you know how to use a soldering iron.  
Go for it Bro !!

Posted on Jun 10, 2008

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Ln 840410

You have bad grounds in the horizontal or vertical area of this TV. I have not repaired this model. I have repaired many of these, in other TVs. You will examine ICs mounted to large heat sinks. Find the vertical IC and resolder pins here. Check the horizontal Transistor (mounted on heat sink as well) and resolder this. Resolder any of the large transformer coil pins as well. Be sure to resolder the Flyback Transformer pins. And lastly look for bad capacitors (capacitors will bulge) and their grounds as well. Heat is the big problem in any electronics and solder will separate the pins from the traces and cease circuit flow. This is slow and tedious work on one hand but an easy fix for the experienced. Thanks for asking me!

May 26, 2013 | Televison & Video

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Convergence problem on my RCA tv D56W136DB

Look first in menu to see if convergence option is still there- one issue with this set is a few parts fail and the option is no longer there.

Most convergence problems in this set are bad solder connections under and at the high voltage transformer on the large middle board

you have to be able to get that board out--plugs and plastic snaps hold it in and look for the connections, usually again right at the transformer with its semi-circle of pins under it.

let me know if you have questions.-----photo is of a typical high voltage transformer so you can if want know where to first look.


Dec 19, 2012 | RCA D52W23 52" HDTV CRT TV

2 Answers

Where is the flybac located in a rca hd52w59

Flyback transformer other wise called Line output transformer {LOT} is actually a step up transformer, which supplies extra high tension voltages to the guns. It can be locatee on the main printed circuit board. 2_7_2012_5_19_59_pm.jpgJust see the different views of the main board of your RCA TV. You can see the flyback transformer at the left top corner, look like a large black componen; with a ferrite "U" type core goes though it. It is the LOT. Line Output Transformer, otheriwse called as Flyback Transofrmer. OK.

Feb 07, 2012 | RCA Televison & Video

1 Answer

Hitachi Projection Color TV. The model # is 43UWX10B. It won't turn on - no picture or sound. Tech says it's the transformer, but parts aren't made anymore. Any idea where I could get part(s), how much...

I have worked on a lot of these and never seen a bad "transformer" try to get the tech to identify the location or part number needed. You can then search the internet or check with Hitachi.

To be honest the only way a tech could "KNOW" the part is bad is to replace it.

My guess is they could not find the problem and just wanted out and to collect whatever estimate fee they would get for looking at it.

A dead set can be caused by many things, rarely is it the transformer, I presume he is talking about the High Voltage transformer as that is the only major one in the set.


Jan 11, 2011 | Hitachi 43UWX10B 43" Rear Projection...

1 Answer

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that model does not use a power transformer, all voltages are from main supply and scan derived ones.

Do us both a favor and tell me what set is doing or not doing?


Nov 05, 2010 | Mitsubishi WT-46805 46" Rear Projection...

2 Answers

My R52WH74YX66 HDTV shows in 3D and double vision

This is a common problem in these sets; if the set does not show "convergence" in the customer menu there are three pico type fuses on the deflection board and one is blown.

To be perfectly honest most shops do not like to fix this brand of set as the convergence circuit is spread across 3 circuit boards that are not available--all parts of course are RCA only and delays to get parts needed are common here.

Look in the customer menu and if convergence does not show, one of the protect fuses (really labeled as a "coil" is bad---these are usually located next to the High Voltage transformer and are usually tan in color about the size of a one watt resistor.

Let me know if you have questions as I am here to help.


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1 Answer

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There is a stand up coil about 1" tall and the dia of a nickel close to the HV transformer, the iron core glue comes loose over usage. This can be cured by replacing it or using a sealer/caulk and re-seal the coil. Hope this helps, it is not an expensive job for service.

Feb 13, 2009 | RCA D52W20 52" Rear Projection HDTV-Ready...

1 Answer

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Yes, your geometry correction has failed and you will need to seek qualified tech for help. You need what are called STKs and you should be able to get the job done inhome for under 300.00

Jun 08, 2008 | Samsung PCL545R 54" Rear Projection...

1 Answer

Difficul to turn on

If it is making a loud poping, there is a high voltage leak probably and most likely at the high voltage transformer which is the 3 inch square white device with the large red wire coming out of it. With someone turning on the set on someone looking in the back with the back off you will see the arc of high voltage. Also look up under back in further where the tubes are (three) and look for the arc. But is most likely on the transformer. Common problem is the transformer and must be changed by trained person.

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4 Answers

Lamp issues

No its a tube and not a bulb. If thew line is green then theres an issue with the red and blue as the green is stationary on most sets unless thers a green centering ? Its a componet on the convergence board thats bad or going bad but if you replace any components on the board most likly your gonna need to do a convergence alighnment I would let a pro handle this repair unless your an experineced repair tech Good Luck

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