Forums :: NEW! Web Resources :: Features :: Photo Gallery :: Vintage Radio Shows :: Archives
Support This Site: Contributors :: Advertise


It is currently Jun Wed 16, 2021 3:05 am


All times are UTC [ DST ]





Post New Topic Post Reply  [ 4 posts ] 
Author Message
 Post subject: Good day bad day.
PostPosted: May Fri 14, 2021 5:46 am 
Member

Joined: Feb Fri 01, 2019 11:35 pm
Posts: 637
Location: Riverside Ca. 92504
I have been working on a Zenith R 520 chassis for three days off and on. I had picked up this chassis for some spate parts. I decided to see if I could repair it. It had been fried. The output speaker coil had the tar melted off of it with a hole in the bottom from a small explosion. The power line coupling Cap had been fried, the Ecap can was fried, and the 12 mfd cap under the tone controls was black and fried. I did not know what else was damaged so I put in a new output transformer and used one of those Fil T Pac from Toms radio. The instructions did not match the wiring in this radio so it took me some time to figure it out because I wanted the 1/16 amp fuse to kept in use. Got it done this afternoon, cranked up the vari ac to 90 volts and it came alive. Nice. Put in on battery and I got several channels with out an antenna. I went back to plug it in, and it was humming bad , got a channel then went out. I had flipped it over on the battery plug and did not see the battery plug folding under the chassis shorting out the new board I had just installed. This has been put away for a few days . I just got my shipment in of some caps I needed and will go to another radio for a couple of days. It is a 6G004 that I had to get a case for that was broke in transit. I did get in two nice Zenith transistor radios that worked well. One was one of the early solar models. Opened it up, it had been recapped. I took it out in the sun and it worked only on solar power. Put batteries in and it was great. Ahh the good. Tom


Top
 Profile  
 
 Post subject: Re: Good day bad day.
PostPosted: May Mon 17, 2021 3:24 am 
Member
User avatar

Joined: Feb Fri 25, 2011 12:57 am
Posts: 2755
Location: 08033 Cherry Hill Jersey
Sounds like a typical day with radio repair - wins and losses.
Keep at it!

_________________
Want 20's-30s transmitters
KD2AZI/AE


Top
 Profile  
 
 Post subject: Re: Good day bad day.
PostPosted: May Mon 17, 2021 3:09 pm 
Member
User avatar

Joined: Dec Tue 23, 2014 6:51 pm
Posts: 2207
Location: N. Palm Bch, Fl.
That battery plug on the Zenith TO's love to curl up under the chassis. Flip the chassis over and 8 out of 10 times it is underneath. I have been lucky though. Only once it shorted out, but only blew the variac fuse.

Freeman


Top
 Profile  
 
 Post subject: Re: Good day bad day.
PostPosted: May Tue 18, 2021 5:08 am 
Member

Joined: Feb Fri 01, 2019 11:35 pm
Posts: 637
Location: Riverside Ca. 92504
I may be getting to old to work on radios although it seems to be my one enjoyment now. I was working on one last week and felt a tingling feeling. I thought I had hit one of the E caps I was replacing. Felt a tingling again, looked, and I had failed to unplug it after I had tested it. I had unplugged my hot air spaghetti shrinker. It is like a hair dryer only smaller.
The R 520 chassis works a little on battery now so somewhere there is a wiring error or something is still shorted out. The caps they used on that chassis instead of paper caps are great. They look like giant mica caps. Tom


Top
 Profile  
 
Post New Topic Post Reply  [ 4 posts ]  Moderator: sofaslug

All times are UTC [ DST ]


Who is online

Users browsing this forum: Dennis Wess, Google [Bot] and 32 guests



Search for:
Jump to:  


































Privacy Policy :: Powered by phpBB