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

Help understanding a 89 radio rebuild new guy
#6

Gee! That is a great help, I can now see what I am looking for and it's crisp and clear and matches exactly the radio I am working on.
  Next week I get a package of more capacitors so I can continue with recapping.
  The thing I am curious about is that all but one of capacitor blocks was untouched with original soldering on there terminals.  The one that had obviously been charged was in the RF section.  I have replaced all caps involving tuning of the coils then did an alignment.
  The radio looks an molested throughout the whole radio section but around the power supply and audio is a different story.  For one thing there are at least 4 electrolytic caps at values from 10 to 30uf the original pair or 8uf caps are still there but have been clipped.  Underneath is a  home made resistance bridge of 4 dog bone resisters that are just suspended through creative, artistic soldering.   It's a mess but for now I am leaving it alone because there is quality DC and the audio is quiet strong.  I have two 8uf cans coming and then will make a project of putting the power supply back to the way it used to be.
  Do you know what voltage is expected at the grip cap of 36 mixer? I have about -1v seems low?
Thanks again for the cool factory data, Bruce


Messages In This Thread
462ron - by 462ron - 6 hours ago
RE: Help understanding a 89 radio rebuild new guy - by Bruce B - 5 hours ago



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Eico 536 dead
Interior picdaveone23 — 02:03 PM
Eico 536 dead
Dont see a fuse. I attached a new schenatic.daveone23 — 01:58 PM
changer from 49-1278 cartridge
Welcome to the Phorum, thomashjr! It appears that you have a record-cutting phonograph. We have limited information in...GarySP — 01:23 PM
Restoring Philco 38-12 in a white wood cabinet
It's interesting how many manufacturers offered the painted wood cabinets in the later 1930's and into the 40's, when on...Brad Winder — 01:12 PM
Philco 39-116 radio and remote
Hi Ron, I'll have to open the junction box to check on how it's wired. The other pair may be connected but is no longer...RichG — 12:19 PM
Eico 536 dead
First, there is no schematic in it. Second, do you, possibly, have a fuse in that thing?morzh — 12:15 PM
changer from 49-1278 cartridge
Hi:  Will try and attach images of this 33 and 78 changer with two arms and a mercury switch.  The 78 cartridge is dead ...thomashjr — 12:00 PM
Help understanding a 89 radio rebuild new guy
I don't know if this would help but there is a page about the model 89s, and the changes they made over the years they w...Arran — 11:30 AM
Help understanding a 89 radio rebuild new guy
Fingers crossed you'll get lucky and won't have to, but chances are you're going to have to rewind at least one, possibl...NostalgiaRadioTime — 11:06 AM
Eico 536 dead
The continuity works but ac dc does not. Its an east schematic but i cant figure it out.daveone23 — 09:08 AM

[-]
Who's Online
There are currently 2400 online users. [Complete List]
» 3 Member(s) | 2397 Guest(s)
AvatarAvatarAvatar

>