[BC] CONTINENTAL 315R-1 5KW AM TROUBLE

[Dudley]

I know stuid question, What about the load , has anything 
changed,have you checked the load resistance at the phaesor or 
antenna base current, KDUD
----- Original Message -----

>BOYDSIRBOYD at aol.com wrote:
>>to the brain trust,
>>
>>I have for the last 3 days racked my head literally on 
>>this  transmitter (and boy does that hurt).  the trouble I have is 
>>that the  high voltage on the pa tube wants to arc (and a good size 
>>one too) to the  neutralization plate (C 46). I have went through 
>>every power supply's in this  thing. the switch mod bias +125 V / 
>>-125 V supply, the 28 V supply( I did find R  9 and R 6 both bad) 
>>and the logic power supply.
>>
>>
>>now meter information,,, as soon as I hit low power button the high voltage
>>meter pegs ( max on meter is 15kw volts), the transmitter should go no higher
>>than 14kw volts.  the plate voltage starts to come up but arcing occurs
>>before the meter reaches it's place on the scale,  the plate 
>>current comes up and arcing occurs when as the meter reaches it's point.
>>I feel the plate transformer has a short causing the extreme arcing on the
>>pa tube...