26-09-2017, 06:30 PM
Hi.
Well as usual there is always a problem.
The Philips scan drive transformer has bit the dust. What I have decided to do now is to fit a Thorn Jellypot that I have done in my main TV22. Unfortunately I don't have another one that is intended for 405 lines. Mike (Mikeymushradio) has a 1500 (625 line only) transformer and I will try and see if it will work, it's normally easy enough to "throttle" back the line stage so it wont produce excessive width and EHT by a couple of methods. You can reduce the HT or damp one of the windings.
In the meantime I have replaced the PZ30 with a PY33 and added a B9A base for a PY800 efficiency diode.
Ideally I'd prefer a 950 or 1400 Lopt. If anyone has a spare for sale let me know, i will try the 1500 one firstly.
Well as usual there is always a problem.
The Philips scan drive transformer has bit the dust. What I have decided to do now is to fit a Thorn Jellypot that I have done in my main TV22. Unfortunately I don't have another one that is intended for 405 lines. Mike (Mikeymushradio) has a 1500 (625 line only) transformer and I will try and see if it will work, it's normally easy enough to "throttle" back the line stage so it wont produce excessive width and EHT by a couple of methods. You can reduce the HT or damp one of the windings.
In the meantime I have replaced the PZ30 with a PY33 and added a B9A base for a PY800 efficiency diode.
Ideally I'd prefer a 950 or 1400 Lopt. If anyone has a spare for sale let me know, i will try the 1500 one firstly.
