Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

philco 37-630 volumn issue
#1

Hi:

Am working on a Philco 37-630. Having a problem with the volumn /reception level. The set has a medium to low volumn and limited reception. However when I touch the grid cap of the 6A8G tube (Det/Osc) the set blasts away to the point you have to lower the volumn control along wihch you have a selection of many more stations.
. I have replaced all caps in the set so that should not be an issue. I tried a different 6A8G tube no luck. Also this problem happens on both the broadcast and shortwave bands alike, so I am not inclined to think its a coil problem, unless both coil sets for each respective band are shot. Alignment of the set did help a little but not enough to maintain the high volumn that I know this set can achieve. When using the signal generator the tone would also come in moderate to low and when the grid cap was touched it would blast away!! Besides keeping my finger on the grip cap when playing the set any suggestions?? Thanks.
#2

There is a good chance both ANT coils are open sue to age or static discharges in the past. Also be sure of the continuity thru the bandswitch contacts as well for the ANT coil switch circuit.




Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
Cannot Adjust an IF Transformer’s cores
The abilities of our 'Phorum Pholks" never ceases to amaze me! Fantastic fabrication, Joseph! I'm waiting now for...GarySP — 08:27 PM
PT-6 antenna connections
Thanks. I never realized that was a notch noted in the schematic as described. I’ll recheck my wiring.bridkarl — 08:13 PM
Cannot Adjust an IF Transformer’s cores
Thank you! I was quite new to the Phorum when I started this post, so I feel like it might be advantageous to publish a ...jrblasde — 08:07 PM
PT-6 antenna connections
Notice in the schematic the notch at the bottom of the antenna coil is between pins 3 & 4. Yes, pin 6 of the 7C6 is...RodB — 07:34 PM
bridkarl
I have two PT-6 chassis. On both there is a blue wire that runs from the above chassis transformer to pin 6 of 7C6. So t...bridkarl — 07:23 PM
Cannot Adjust an IF Transformer’s cores
Joseph, now you are an engineer!!RodB — 06:37 PM
PT-6 antenna connections
Hi, reading your explanation I can see the confusion. If you take it one connection at a time it should result in a desi...RodB — 06:34 PM
Cannot Adjust an IF Transformer’s cores
It works! I received the PCBs this morning in the mail, and put everything together. I reused the base from the original...jrblasde — 04:32 PM
PT-6 antenna connections
I seem to have lost my way on this PT-6. I see the antenna aerial transformer schematic - I’m reading pins 1 through ...bridkarl — 12:30 PM
40-150 General questions
Good thing you're a good electrician ... the pictures show a lot of rewiring in your future! Take care and BE HEALTHY!...GarySP — 11:52 AM

[-]
Who's Online
There are currently 3924 online users. [Complete List]
» 1 Member(s) | 3923 Guest(s)
Avatar

>