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Crumbtrail TV Forums: TV Equipment: TV Repair Forum:
Post deleted by oliverwestby

 
 


Wiz
User


Aug 26, 2005, 11:08 PM

Post #1 of 3 (1109 views)
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rrobor
Veteran

Aug 28, 2005, 1:13 PM

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Re: [oliverwestby] Sparking [In reply to] Can't Post
Your 2.2 is open circuit, it blew up the moment you powered up. Dont know where you are IE mains voltage but you could have 340V across that 2.2ohm so W=Vsq/R thats a big resistor, no the resistor will be a 2.2meg ohm bands red red green. It seems you have an inductive load there so when you cut the power because the resistor is open there is nothing to damp the collapsing field. But dont put a 2.2ohm across that capacitor, there may be a wire wound 5 or 7 watt surge resistor in the feed to the capacitor but not across it. This resistor should be a high voltage high stability resistor, standard carbon resistors will fail.


DKendall
New User

Aug 28, 2005, 6:32 PM

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Re: [rrobor] Sparking [In reply to] Can't Post
The tv in question is actually mine. The resistor is not across the capacitor it is the small resistance, high current resistor that goes between positive rectified mains and the possitive of the capacitor before it goes to the transformer. It now reads fine!


(This post was edited by DKendal on Aug 28, 2005, 6:34 PM)

 
 
 


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