The Electronics Universe

So I pulled Q66 2SB754Y and replaced with new and still the same voltages? I tested the one Installed and the one I pulled and they tested good.
             old.       new
hfe        184       144
Ube       536mv   547mv
Ic.         6.3ma    6.4ma

I popped the collector pin off and Its showing 13Vdc but when installed it drops to 2.4Vdc Im thinking something shorted from the Collector to the TP7?
So I pulled the alignment board from TP7, 8 & 9 and tested continuity of each to ground. TP7 shows continuity but only for around 3 second then stops then shows again 3 seconds ..........! So it only does it under power if I unplug power it doesn't show continuity to ground? so plugged in switch on we have continuity as explained above. unplug with switch on no continuity, plugged in switch off no continuity. So only power and switch on will it show continuity?
Had a friend check his on the phone the same way and he doesn't receive any continuity to ground like I am seeing?

OH by the way I love your videos! Helped me fix my 101E without getting any help.

Thank You for sharing your valuable knowledge we appreciate it!

I just got a new (to me) TS-520 on Saturday and after watching some of Buddy's videos I got it up and running.  But, is it just me or is the cooling fan about the wimpiest fan on record?  When I first got it I could watch the blades turn and after disassembling it and lubing the bearings (bushings) with Mobil 1 motor oil it runs faster but there is still virtually no airflow.  I have bought a 3.5" 120VAC muffin fan off fleabay and I hope this will run off of the 100VAC running to the stock fan.  Kind of an odd voltage to be sending to a fan IMHO.  If it doesn't run correctly I'll find a switched 120V source in the radio to send over to it.

Is this a common issue or am I over reacting?  I made a few contacts on Sunday and was told it sounded very good but as the day wore on the meter was acting screwy when I tried to touch up the tuning after changing bands.  That's when I noticed the fan poking along and I have not tried operating again after oiling the fan.

Hi Justin,
Welcome to the forums.
Great to hear you got the 520 working. Good for you.

Buddy

I have a D201 that is showing low AM Receive but USB & LSB are great. The radio keys 4watts and swings 12 with great modulation. I checked all the tubes and they all show 95-100% on my Sencore VII.
I tried doing a 455 Hz AM Alignment as T400 was replaced due to a broken slug. Following procedure i fed 455Hz to pin 2 of V302 with a .01uf cap between. I good good adjustment on the L400 but none on T400 or 401 it makes zero change?
Now what?