Main > Monitor/Video Forum
Hantarex Polo 25/28 Squealing
perjmolsen:
Hi
What can cause this?
My monitor is Squealing..
I thought that it just where a bad solder joint on the neck board at the focus wire but it looked fine to me.
grantspain:
replaced caps?
perjmolsen:
Hi
No not yet, I have just looked for cold joints.
I am thinking to start with the polyester caps near the flyback, would that be an idea?
grantspain:
they are worth checking
you should check the earth pins on the flyback and the earth through screw near the power input
perjmolsen:
Hi
An update
I have now
- Tested all the volts, they are good.
- re-flowed all the pins at the flyback.. same issue
- Put in new polyester caps .. same issue
- changed flyback to a new one.. same issue
I am thinking it might be a sync issue?
So i have tried to change C149 and C150... same issue
Also tested T110 and T112, they tests OK
Next thing is to replace IC104 with a new TDA2593