[TechAssist] Re: Samsung ballast fix

  • From: "John Conti" <contitv@xxxxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Sat, 19 Nov 2005 15:39:08 -0600

Hugh, What was the cross from Mouser elec.!

John
Conti,sTV
Texas


>From: "Hugh  @ Main TV" <maintv2004@xxxxxxxxxxx>
>Reply-To: techassist@xxxxxxxxxxxxx
>To: <techassist@xxxxxxxxxxxxx>
>Subject: [TechAssist] Samsung ballast fix
>Date: Sat, 19 Nov 2005 10:35:12 -0700
>
>Something to save money---we found a fix for the ballast power supply in 
>Samsung DLP projection TVs,  these seem to be same chassis---HLM4365W, 
>HLM5065W,
>HLM437W, HLN437W, HLN4365W, ST43L2HK, HLM507W, HLN507W, HLN5065W, 
>ST50L2K,HLM617W, HLN617W,   &  ST61L2K.
>On the ballast supply there is a vertical mounted board with four  TO220 
>transistors soldered on it  numbered 2SK3294.  We found one of them shorted 
>(10 ohms-all leads) out of circuit.  You may be able to repair the board 
>while still connected to the main board, little tricky to remove it  (we 
>did).  The 2SK3294 does not cross to anything we could find, but found a 
>cross in Mouser web site.  We ordered 3, put in one and the TV is working 
>great!  The replacement transistor cost less than $1.00!
>Note: You have to grind or cut off all but 3/8 in. of the metal tab of the 
>new part and solder it to the vertical mouted board.   This ballast board 
>cost about $120 with shipping new,  $1.00 for a part and little time to 
>fix.
>Note: We were told that these ballast supplies are lethal, don't put your 
>finger in there when on!
>
>Hugh Thornley
>Main TV
>636 Main St.
>Longmont, Co. 80501
>303-776-6955  tel
>303-776-0792  fax
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