13-02-2017, 10:55 PM
(13-02-2017, 09:58 PM)johnmcgivern Wrote: Tp924 is ok when intensity mid position around 50volts.
OK - which implies that the A half the chip and the associated transistor network for TP924 are working.
Possibility is that there is a fault in the DC restorer (diode phut, transistor phut, capacitor phut etc), or there is a problem with the HT, which is handled by the chip B half and a resistor chain.
