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Grundig Tv T51-540 power problem

 
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Tedy
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PostPosted: Mon Oct 08, 2007 8:17 pm    Post subject: Grundig Tv T51-540 power problem Reply with quote

I have a Grundig Tv Model T-51-540 , when i switched it on it's having chik,chik, chik.... sound & the power LED is blinking. It is having power problem that's the voltage in the power supply is reading infinite voltage & when i measure voltage in the Horizontal Transistor the voltage starts normal & then goes infinite & when i took out the Horizontal ( BU508D ),swich the Tv & check the voltage on the HOT it's reading normal ( 130v), but in the power supply it's still infinite And when i check the tansitsor itself it's ok. So what could be the problem , help me please.
Tedy
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PostPosted: Thu Oct 11, 2007 6:33 pm    Post subject: Reply with quote

I have a Grundig Tv Model T-51-540 , when i switched it on it's having chik,chik, chik.... sound & the power LED is blinking. It is having power problem that's the voltage in the power supply is reading infinite voltage & when i measure voltage in the Horizontal Transistor the voltage starts normal & then goes infinite & when i took out the Horizontal ( BU508D ),swich the Tv & check the voltage on the HOT it's reading normal ( 130v), but in the power supply it's still infinite And when i check the tansitsor itself it's ok. So what could be the problem , help me please.
Tedy
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PostPosted: Mon Oct 15, 2007 8:08 pm    Post subject: Reply with quote

Help me plz !
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vtech



Joined: 08 May 2006
Posts: 1264
Location: USA

PostPosted: Tue Oct 16, 2007 3:02 am    Post subject: Reply with quote

Not familiar with the set in question, but your description sounds very much like a problem with electrolytic cap(s) drying up. ---more likely in the front end of the power supply. I would suspect any low value electrolytic. need to investigate further--can not be more specific.

Hope that helps
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PostPosted: Thu Oct 18, 2007 6:01 pm    Post subject: Reply with quote

what other possible faults can it be ? & why is the voltage going very high ?
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PostPosted: Thu Oct 25, 2007 6:59 pm    Post subject: Reply with quote

?
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