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Crumbtrail TV Forums: TV Equipment: TV Repair Forum:
Bush ak19 (21)

 
 


ROY
New User

Aug 23, 2006, 10:02 PM

Post #1 of 2 (891 views)
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Bush ak19 (21) Can't Post
On switching on this Bush AK19 it emmits a high frequency intermittent noise (no sound or pic) which is coming from the SMPS Trans.
Would like to know if replacing this will cure the problem ..........or any other parts they may need replacing with it if indeed this is the problem.
Your help please



techchris
Veteran

Aug 24, 2006, 11:55 AM

Post #2 of 2 (879 views)
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Re: [ROY] Bush ak19 (21) [In reply to] Can't Post
sounds like you have a short circuit somewhere causing the power supply to shut down.check the horizontal out transistor ,it is probably short circuit collector/base. If not then take it out of the board,switch on and see if the tv power supply runs. also check the 120volt supply diode off the smps tx

 
 
 


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