21-01-2021, 05:17 PM
Hi.
Between yesterday and today the smoothing and other HT electrolytic decouplers have been reformed.
Now have both line and frame timebases running on 100v HT.
I am running the heaters from the sets mains transformer and the HT from the Radpack via the variac.
Two of the controls had lost their wipers, one was replaced with a high grade Russian control and the other by a good one from the spares box that went O/C five minutes later, hence the 15k resistor across it. /next will be the RF deck then a test with the CRT in place.
There is no EHT rectifier heaters and both they are certainly not O/C and the TX is fine too and a spark at the EHT Anode, Will need to investigate the reason, A silicon EHT Diode could be used if this a transformer issue.
Once the RF deck is done I'll do the resistors that are out.
It's an awkward set though but we are making progress.
Between yesterday and today the smoothing and other HT electrolytic decouplers have been reformed.
Now have both line and frame timebases running on 100v HT.
I am running the heaters from the sets mains transformer and the HT from the Radpack via the variac.
Two of the controls had lost their wipers, one was replaced with a high grade Russian control and the other by a good one from the spares box that went O/C five minutes later, hence the 15k resistor across it. /next will be the RF deck then a test with the CRT in place.
There is no EHT rectifier heaters and both they are certainly not O/C and the TX is fine too and a spark at the EHT Anode, Will need to investigate the reason, A silicon EHT Diode could be used if this a transformer issue.
Once the RF deck is done I'll do the resistors that are out.
It's an awkward set though but we are making progress.
