Question about Samsung HCM5525W 55" Rear Projection Television

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Tv started to click/pop and blink as if it is shorting out

Not long ago I replaced the sub deflection board (the one in the middle). Everything was great after that, until now. After the tv has been on for a little while it will kind of "pop" and blink at the same times, several times in a row. I am wondering what is causing this. I hope it is not expensive and that I can fix the problem myself. Any help would be greatly appreciated!

Could it be some type of fuse? If so, how would I know which one, and how to replace? Thanks again!

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  • janfinso May 08, 2009

    ok. so i should just follow the cord to wherever it goes and see it something is loose?



    it isn't a constant thing. just every once in a while it will click several times in a row very quickly and the screen will blink as well.



    thanks for the tip!

  • janfinso May 08, 2009

    oh, sorry. new to this site. i'll vote or pay or whatever if i can figure out and fix this thing in my tv before it's too late. gave you a vote...thanks!

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CHECK YOUR RED ,GREEN AND BLUE CRT'S THERE MAY BE A SMALL CRACK ON THEM.MAKE SURE TO TAKE THE YOKE OFF AND INSPECT THE ENTIRE TUBE IF THER IS A CRACK IT IS CAUSING YOUR TV TO GO INTO SAFE MODE. ALSO CHECK THAT NONE OF THE COOLING FLUID HAS DRAINED OUT OF THE TUBES ON TO THE CRT BOARDS IF SO REPLACE THE BOARDS AND CRT IF CRACKED. YOU CAN FIND ALL THE PARTS AT PARTSTORE.COM HOPE THIS HELPS.

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ladywinn
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SOURCE: I have a Samsung Rear Projection TV with a red

No you have 2 convergence ICs replace them if you havent and look for burt resistors near ICs 2.7ohms most of the time 2 of them need to be replaced They are Big Black ICs will have part# on them STK392-020s order parts from Mats 1-800-628-1118

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SOURCE: 2002 samsung rear projection tv wont turn on

Go to this website they will List Parts and Part Number for this Model Your STK ICS need to be replaced or convergence board that has ICs on it!. ICs will have Part # on them STK392-020 Encompass Parts Distrubtion
1-800-638-3328
For ICs Call Mats Electronics 1-800-628-1118 If you are able to repair/replace just ICs replace 2 resistors also 3.9 ohms or 2.7ohms in front of ICs

Posted on Mar 24, 2010

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1 Answer

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2 Answers

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No. The CRT driver ICs are prone to shorting and cause this symptom (I just had one with those very symptoms and the green CRT driver IC was shorted). Disconnecting the CRT board does not clear the short on the board. Often then is a small burn mark on the CRT board under the affected IC (but not always). The IC should be a TDA6111Q. Be sure to note the proper position
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Larry, Check the CRT driver ICs on each of the CRT boards.
Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager / Parts Manager
Gemini Computer, TV, & Security Alarms
(508)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxx
Hi Guys, I don`t see many JVC`s and don`t have the print for this AV48WP30, went out this morning and as customer claimed on phone when you plug set in and turn on it makes a loud thump thump in both speakers 20-30 times then relay clicks, the thump stops, and blue idiot light on front goes dim/bright, dim/bright, have to unplug set to start this same scenario over again. Never develops HV or audio, Will order the service manual today, but would like to know if anyone has seen this before (should say "heard" this before)
I would disconnect each crt board and hv lead one at a time and try. Have seen several bad tubes on that model. The only other problem I have seen on that set is bad convergence amps, however that doesn't cause shutdown.
Perry Bower
Electric Medic
From Tech Repair CD:
JVC\AV48WP74\just went click*click*click when turned on Video drive IC (IC1101) on the red CRT module
shorted. It looked like bad solder on the B+ was the cause

Frequently Used Top Five Repair Parts by symptom code
MODEL NUMBER : AV48WP30 - TV
SYMPTOM CODE : DEAD
TOP FIVE PARTS :
2SC5552-RL
2SC5904-RL
QQH0113-002
STR-F6629B/F7
STK392-110
Above from JVC Web site, also I have seen shorted video drive IC's on the crt boards short and cause this symptom. Try unplugging the 200 volt source to the crt boards and see it the set powers up and stays on. There is a B+ relay which supplies 130 Volts to the horizontal output circuit. Is this relay energizing? I takes about five seconds after the power is turned on for it to energize. If a short is detected on the 130 volt line the blue power lamp on the front will do what you describe and the relay will pulse on and off. (David)

Symptom:
Non-functional Digital Input
Solution:
1. Power off the unit
2. Disconnect the digital input if it is connected
3. Remove the rear cover
4. On the digital input module, using a shorting pin (PC type) or a
jumper, short Pin 1 and Pin 2 of the
SB connector
5. Power on the unit
6. Unplug the unit and remove the shorting pin or the jumper
7. Re-attach the unit’s rear cover
8. Power on the unit, and input the digital source

Jan 16, 2007 | JVC AV-48WP74 48" Rear Projection...

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