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Old 20th Sep 2020, 1:39 am   #69
IKC2E51R8
Hexode
 
Join Date: Aug 2018
Location: Dublin, Republic of Ireland.
Posts: 494
Default Re: Help With Vertical Circuit. Capacitor getting extremely hot

Hi Everyone

I've changed everything in the vertical circuit. still nothing, just horizontal line (G2 up), here's the voltages from the IC if its any help to decipher whats going wrong

Pin 9 = 25.9v (Supply)
Pin 8 = 0v (Flyback Generator)
Pin 7 = 6.0v (Guard Circuit)
Pin 6 = 25.5v (Output Supply)
Pin 5 = 24.2v (Output)
Pins 4,3,2 &1 all 0v (Ground 2 & 4. Drive 1&3)



There's 6v on Pin 7 (guard Circuit) reading the datasheet for the TDA3653B it says when the voltage on pin 8 drops below 1.8v a dc voltage will be produced on Pin 7 blanking the screen. this seems to be happening but I don't know why.

can anyone help me
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Cheers,
Luke
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