baritonomarc
Member
White ceramic resistor hot to hell in an Atari Disco monitor
Hi all,
what does it means when the big white ceramic resistor close to the power regulator goes hot to hell, even desoldering one of it's sides? 'O_O
this is the story so far: i have an Atari Disco AGM20M med res on my Paperboy. The monitor was working when i got it, but during testing of the non working PCB it when black blowing up a safety resistor and taking the HOT, voltage regulator and main fuse with it.
I then substituted the Flyback (i was lucky enought to find a spare one), the safety resistance, the HOT, the power regulator, the fuse (... and all the caps just as it was on my test bench).
Now, the monitor started to work again, but only for an hour or so, then died again.
This time i noticed that the big white ceramic resitor went really hot, up to the point that the tin fused!!! What could be happened?
It's a little frustrating... but i will not give up
!
Hi all,
what does it means when the big white ceramic resistor close to the power regulator goes hot to hell, even desoldering one of it's sides? 'O_O
this is the story so far: i have an Atari Disco AGM20M med res on my Paperboy. The monitor was working when i got it, but during testing of the non working PCB it when black blowing up a safety resistor and taking the HOT, voltage regulator and main fuse with it.
I then substituted the Flyback (i was lucky enought to find a spare one), the safety resistance, the HOT, the power regulator, the fuse (... and all the caps just as it was on my test bench).
Now, the monitor started to work again, but only for an hour or so, then died again.
This time i noticed that the big white ceramic resitor went really hot, up to the point that the tin fused!!! What could be happened?
It's a little frustrating... but i will not give up
