Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

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

Motorboat audio I can't shake Help!!
#1

Need some direction on a grrreat little Philco PT-30. I changed out all capacitors, dialetric caps, and some worn looking resistors. I checked all the tubes and all test good. I used my meter to check for ground on the outside tube shields to chassi on the three of the five that are wired for it, all good. The audio sounds badly garbled, like a motor boat. The volume does goes up and down. Loud and strong. The lamp lights up bright when I turn it on then goes to a real low dim. I know this is normal but it is real dim when it finaly settles. New power cord also. SO what next? Any direction is helpfull. Can it still be a bad tube? I feel it is a ground issue, is there a way of checking each tube base? IF so which tube first? I get channels in fine. Is there a trick I am missing? Will send pics if interested and help. thank you for your help. Napi


Messages In This Thread
Motorboat audio I can't shake Help!! - by Guest - 07-12-2006, 01:11 PM
[No subject] - by Bill Hutchinson - 07-14-2006, 06:25 PM
Works good without loop antenna, what gives???? - by Guest - 07-16-2006, 10:01 PM
[No subject] - by Bill Hutchinson - 07-16-2006, 10:36 PM
What u do? Don't know but would do it again! - by Guest - 07-18-2006, 03:16 PM
[No subject] - by 49Stude63 - 07-19-2006, 03:33 PM
[No subject] - by Bill Hutchinson - 07-20-2006, 04:25 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Heathkit Sweep Generator TS-4
Ron Instead of Quick reply, go to New Reply, then go to the title of the very first post, and change the title text the...morzh — 02:00 PM
6TPZ and 5TPO Radio Help
I am not a specialist in car radios. I suspect they might use vibrators to convert 12V to acceptable tube voltages, so ...morzh — 01:58 PM
6TPZ and 5TPO Radio Help
Welcome to the Phorum, R3Sons! I have very limited experience with car radios other than installing custom radios back ...GarySP — 01:08 PM
462ron
OK, I need to rename this thread to say..Eico 368 TV/FM Sweep Generator instead of the current title..Heathkit Sweep Gen...462ron — 12:49 PM
6TPZ and 5TPO Radio Help
Hello, I have a Philco (Ford) 6TPZ and a 5TPO radio.  I replaced the electrolytic capacitors in both.  I have the SAMS m...R3Sons — 12:29 PM
The list of my radio & TV collection!
Hello Peter, Thank you for posting that !! Sincerely Richardradiorich — 09:40 AM
Eico 232 VTVM Schematic
It's a microwave antenna. ?;-p?. I substituted 1N4002s off the 6.3 vac winding for the 1.5 volt battery. Uniprobe is the...RodB — 05:50 PM
Eico 232 VTVM Schematic
Try BAMA for a schematic. Looks like a replacement power source for the D battery has been installed. The tube may be...Chas — 04:51 PM
Eico 232 VTVM Schematic
Is that a battery holder?morzh — 04:43 PM
Eico 232 VTVM Schematic
A friend gave me this Eico 232 VTVM and I'm having trouble locating the schematic for it. This one seems to be a later v...RodB — 04:17 PM

[-]
Who's Online
There are currently 3252 online users. [Complete List]
» 2 Member(s) | 3250 Guest(s)
AvatarAvatar

>