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my rca big screen tv

 
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eyegriff
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PostPosted: Sun Jul 03, 2005 7:10 am    Post subject: my rca big screen tv Reply with quote

my rca big screen tv just sounds an alarm when plugged in..no picture
sounds like a fire alarm....
model no. is p60923bl
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Al_Dodge_Bundy



Joined: 05 Apr 2005
Posts: 93
Location: Netherlands

PostPosted: Sun Jul 03, 2005 12:37 pm    Post subject: Reply with quote

Please check if there is a short in the high voltage circuit on the main pcb.
(probably a shorted high voltage driver-transitor)

You're primairy power supply will startup, detect a secundairy short, and shuts down again, then starts up again etc.. This could be the cause of the high pitching noise you hear!

Good luck,

Mark
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mark



Joined: 20 Jan 2005
Posts: 43

PostPosted: Thu Aug 18, 2005 10:33 pm    Post subject: Reply with quote

if its a PTK195 check the horizontal output and if its bad replace it and the flyback. known issue with these rca sets.
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PostPosted: Sat Aug 20, 2005 3:40 am    Post subject: Re: my rca big screen tv Reply with quote

eyegriff wrote:
my rca big screen tv just sounds an alarm when plugged in..no picture
sounds like a fire alarm....
model no. is p60923bl


looks like EHT leakage from the distribution block or
deflection stage .check the B+ line

prakash
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