Forums :: Resources :: Features :: Photo Gallery :: Vintage Radio Shows :: Archives :: Books
Support This Site: Contributors :: Advertise


It is currently May Wed 24, 2017 1:32 am


All times are UTC [ DST ]





Post New Topic Post Reply  [ 10 posts ] 
Author Message
 Post subject: Panasonic AN-109 TV
PostPosted: May Fri 19, 2017 9:30 pm 
Member

Joined: Oct Thu 15, 2015 8:22 pm
Posts: 56
Location: Baltimore, MD
I'm not sure if this is in the correct forum so please move accordingly.

I have a Panasonic AN-109 9" portable tube TV from the late 60's. I just started tearing it down to begin restoration. The PC board seems to be covered with some sort of waxy sticky material. This would be bad enough but I evidently got the TV too close to my table saw and now the sticky stuff is covered with saw dust that wont vacuum off. I'm thinking about trying compressed air but wonder if the fragile parts, coils, etc., would be damaged. Any ideas here would be greatly appreciated.

Regards,
BobH


Top
 Profile  
 
 Post subject: Re: Panasonic AN-109 TV
PostPosted: May Fri 19, 2017 9:37 pm 
Moderator

Joined: Jan Thu 01, 1970 1:00 am
Posts: 25205
Location: Detroit, MI USA
I don't remember them being coated with anything like that. You won't hurt anything with low pressure air, but if the pressure is too strong or too close to components, there's a chance of causing damage.

You might think about using some type of spray cleaner which evaporates 100%, to wash this off with.

_________________
Dennis

Experience is what you gain when the results aren't what you were expecting.


Top
 Profile  
 
 Post subject: Re: Panasonic AN-109 TV
PostPosted: May Fri 19, 2017 9:44 pm 
Member

Joined: Oct Thu 15, 2015 8:22 pm
Posts: 56
Location: Baltimore, MD
Dennis,

Thanks for the speedy reply. I have some "CRC QD Electronic Cleaner" from a local auto parts store that I have used to clean tuning capacitors. It does a reasonable job but it gets really cold as it evaporates and sometimes causes water condensation to form. Maybe I should give this a try.

Regards,
BobH


Top
 Profile  
 
 Post subject: Re: Panasonic AN-109 TV
PostPosted: May Sat 20, 2017 12:43 am 
Member
User avatar

Joined: Jan Thu 01, 1970 1:00 am
Posts: 5053
Location: Woodinville, WA USA
Isopropyl alcohol ("rubbing alcohol") and a soft brush is pretty safe and it may be all you need. The alcohol evaporates with no residue.

Turn the circuit board on its side and let the excess drain down onto paper towels.

Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html


Top
 Profile  
 
 Post subject: Re: Panasonic AN-109 TV
PostPosted: May Sat 20, 2017 12:53 am 
Member
User avatar

Joined: Jan Thu 01, 1970 1:00 am
Posts: 12645
Location: Fernandina Beach, FL
As Phil has suggested, alcohol often works. Recently, I was working on a Dynaco ST-70 board. It was covered with wax and the alcohol did not remove the wax. But what did work was lighter fluid, the universal gum remover. A trick that my Dad used often.

Of course, the usual caution is warranted due to the explosive nature of benzine or lighter fluid.

_________________
Don


Top
 Profile  
 
 Post subject: Re: Panasonic AN-109 TV
PostPosted: May Sat 20, 2017 2:33 am 
Member

Joined: Oct Thu 15, 2015 8:22 pm
Posts: 56
Location: Baltimore, MD
Phil, Don,

Thanks for the replies. I have some rubbing alcohol available (70% Isopropanol) but I haven't had any lighter fluid in a while. I wonder if straight Isopropanol is available in the home improvement big box stores. I will surely check.

Thanks again,
BobH


Top
 Profile  
 
 Post subject: Re: Panasonic AN-109 TV
PostPosted: May Sat 20, 2017 2:44 am 
Member
User avatar

Joined: Jan Thu 01, 1970 1:00 am
Posts: 5053
Location: Woodinville, WA USA
Try what you've got. It might work.

Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html


Top
 Profile  
 
 Post subject: Re: Panasonic AN-109 TV
PostPosted: May Sat 20, 2017 3:10 am 
Moderator

Joined: Jan Thu 01, 1970 1:00 am
Posts: 25205
Location: Detroit, MI USA
I agree, use the least aggressive cleaner first before going to stronger ones.

I have successfully used CRC automotive cleaners on home electronics, including brake cleaner, but you really have to be careful because some of the plastics in older equipment might not like them.

_________________
Dennis

Experience is what you gain when the results aren't what you were expecting.


Top
 Profile  
 
 Post subject: Re: Panasonic AN-109 TV
PostPosted: May Sat 20, 2017 12:45 pm 
Member

Joined: Apr Sat 06, 2013 2:18 pm
Posts: 275
Location: New Hampshire
For alcohol 91% isopropyl is best & dirt cheap at any drug store.
A lot of vert output transformers went in those sets & put
out wax but not a lot. Must have been something in the air.
You can often tell what room a set was in by the type of
crud in it.

73 Zeno
LFOD !


Top
 Profile  
 
 Post subject: Re: Panasonic AN-109 TV
PostPosted: May Sat 20, 2017 1:47 pm 
Member
User avatar

Joined: Jan Thu 01, 1970 1:00 am
Posts: 12645
Location: Fernandina Beach, FL
philsoldradios wrote:
Try what you've got. It might work.

Mr. Detrola wrote:
I agree, use the least aggressive cleaner first before going to stronger ones.
I have successfully used CRC automotive cleaners on home electronics, including brake cleaner, but you really have to be careful because some of the plastics in older equipment might not like them.

Certainly, I would start easy and see where it goes.

I tried to warm a jar candle so that I could dump the wax out and recycle the jar. The candle had some water in the bottom and the steam exploded in the microwave. Candle wax all over the interior. It took two hours to clean. But 90% isopropanol alcohol was able to slowly dissolve it.

However... on my Dynakit ST-70 circuit board which appeared to be covered in bees wax, the alcohol would not touch it. Lighter fluid was the only thing that even began to dissolve it. And, it took quite some time. The lighter fluid did not remove the markings from the board or the stripes on the resistors. So, I was lucky.

Try the easy ones first. For sure, water won't remove the wax!

_________________
Don


Top
 Profile  
 
Post New Topic Post Reply  [ 10 posts ]  Moderators: 7jp4-guy, Mr. Detrola

All times are UTC [ DST ]


Who is online

Users browsing this forum: No registered users and 7 guests



Search for:
Jump to:  




















Privacy Policy :: Powered by phpBB