15-06-2017, 08:58 AM
(This post was last modified: 15-06-2017, 09:02 AM by Geordie McBoyne.)
The EHT transformer has been rewired into the receiver circuit. To be on the safe side the variac supplied the mains to the receiver. The U16 EHT rectifier was not used at this stage. Over a period of time the supply voltage was increased until the full 240 volts was attained. I can report there has been no problems. The timebase valves and CRT heaters are supplied by the EHT transformer and are glowing normally. It's safe to say that 4KV AC is present at the top cap connector of the U16.
So now it's time to find out if 4KV DC is available for the anode of the CRT. It all depends on the condition of the two 0.03mfd EHT smoothing capacitors. I'm advised that according to an EMI service bulletin these capacitors can be replaced by a single 0.1mfd capacitor.
Geordie McBoyne.
So now it's time to find out if 4KV DC is available for the anode of the CRT. It all depends on the condition of the two 0.03mfd EHT smoothing capacitors. I'm advised that according to an EMI service bulletin these capacitors can be replaced by a single 0.1mfd capacitor.
Geordie McBoyne.
