Can anyone help me out?
My 28" Polo Star monitor won't turn on, and gives the famous ticking sound.
I've searched the forums and have done the following.
- Removed the HOT and dummyloaded the B+ with a 40W bulb from R153.
- At R153 I measured +/- 145V, and at the centre pin of the (unplugged) connector to the yoke I measured 119V, which I adjusted to 116V as I understood that's the correct voltage.
- Replaced the HOT (as the old one measured faulty) with the BUH1015, which the supplier said was a correct alternative for BU2530AW.
- Checked the T1 transistor (measured ok, replaced anyway) in the PSU section.
- Checked the transistors on the switch board, T1 and T6 were faulty, so replaced these.
- The polycap C101 tested good, so I did not change that.
After reconnecting the board, still the ticking sound, no difference.
I am stuck at the moment
Can anyone point me in the right direction?
My 28" Polo Star monitor won't turn on, and gives the famous ticking sound.
I've searched the forums and have done the following.
- Removed the HOT and dummyloaded the B+ with a 40W bulb from R153.
- At R153 I measured +/- 145V, and at the centre pin of the (unplugged) connector to the yoke I measured 119V, which I adjusted to 116V as I understood that's the correct voltage.
- Replaced the HOT (as the old one measured faulty) with the BUH1015, which the supplier said was a correct alternative for BU2530AW.
- Checked the T1 transistor (measured ok, replaced anyway) in the PSU section.
- Checked the transistors on the switch board, T1 and T6 were faulty, so replaced these.
- The polycap C101 tested good, so I did not change that.
After reconnecting the board, still the ticking sound, no difference.
I am stuck at the moment
Can anyone point me in the right direction?
