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 Post subject: Holiday Project: Philips D2935 keypad restoration
PostPosted: Jan Fri 03, 2014 9:53 am 
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Location: Santa Cruz mountains
This is a radio I picked up for $5.00 at the flea market portion of CHRS's KRE LIVE! event last July.

Attachment:
d2935_before.JPG
d2935_before.JPG [ 142.55 KiB | Viewed 8112 times ]


The D2935 was made in Hong Kong by Philips in the late 1980s as an attempt to compete with the Sony and Grundig digital SW radios of the era. It faded from the marketplace pretty fast and it is not a common radio in the USA. This is the only one I have ever seen in the flesh.

When I first got it, I plugged it in and confirmed that it works fine. However, it is plagued by the consequences of Philip's unfortunate decision to use a keypad that is made from some sort of plastic that can't withstand long-term exposure to UV light. The damage to the keypad on my radio can be seen in the photo above. When I first picked up the radio in the hot sun last July I could actually feel the keypad melting under my fingertips!

The performance of this set is quite good. It isn't as fancy as competing offerings of that era, but it is a good radio. No doubt the radio would have been kept by the original owner if the keypad wasn't falling apart. I don't think that replacement keypads are available anymore, so I decided to give it a new lease on life by making a new one. The first step was taking a picture of what was left of the old one to use as a template. I used my old Pentax copying stand for this:

Attachment:
D2935_camera.JPG
D2935_camera.JPG [ 136.51 KiB | Viewed 8112 times ]


Next, I used my computer to draw a new keypad using GIMP, and then printed it out on a self-adhesive label:

Attachment:
D2935_computer.JPG
D2935_computer.JPG [ 239.77 KiB | Viewed 8112 times ]


Attachment:
D2935_label.JPG
D2935_label.JPG [ 71.5 KiB | Viewed 8112 times ]


Next, I peeled off the old keypad:

Attachment:
D2935_peel.JPG
D2935_peel.JPG [ 105.86 KiB | Viewed 8112 times ]


Attachment:
D2935_nokeypad.JPG
D2935_nokeypad.JPG [ 105.71 KiB | Viewed 8112 times ]


After that, I placed a self-adhesive laminating sheet on top of the printed label, trimmed everything to size, and stuck it on the radio in place of the old keypad. Here is the result:

Attachment:
d2935_after.JPG
d2935_after.JPG [ 116.45 KiB | Viewed 8112 times ]


Works perfectly and looks almost exactly like the original. The laminating sheet I used made the replacement keypad more glossy and reflective than I would have liked (the original had a matte appearance), but it's still a heck of a lot better than what I started with.

Looking on the web at other pictures of the D2935, I can see that this is a pretty common issue with these radios. Radiomuseum has a picture of one with exactly the same keypad cracking/disintegration issue mine had, and there are many others with keypads that have yellowed with age.

If anyone wants the file containing the artwork I created for this one, just let me know.


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 Post subject: Re: Holiday Project: Philips D2935 keypad restoration
PostPosted: Jan Fri 03, 2014 11:55 am 
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Joined: Aug Wed 26, 2009 1:50 am
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Location: Mesquite NV 89027 (from Coventry, UK)
What a great idea. Well done!

Colin


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 Post subject: Re: Holiday Project: Philips D2935 keypad restoration
PostPosted: Jan Fri 03, 2014 12:30 pm 
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Location: SoCal, 91387
OUT-standing! :D

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 Post subject: Re: Holiday Project: Philips D2935 keypad restoration
PostPosted: Jan Fri 03, 2014 12:35 pm 
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Location: Vieques,PR 00765 USA
Good job, man! I see its all buttons and no 'tactile' contacts. You got lucky there.

What did you use for adhesive?

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 Post subject: Re: Holiday Project: Philips D2935 keypad restoration
PostPosted: Jan Fri 03, 2014 4:09 pm 
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Location: Santa Cruz mountains
Quote:
.
Good job, man! I see its all buttons and no 'tactile' contacts. You got lucky there.

What did you use for adhesive?


I printed it out on on a full page adhesive shipping label, and then put a clear self adhesive laminating sheet on top of it to protect it from from dirt and the elements. The laminating sheet is fairly thick so it should last a while.

Yes, I got lucky with this one. It is simply an array of conventional buttons with a plastic label over it, instead of the typical self contained membrane keyboard with little domes that touch built-in contacts when pressed. If they had done that, this radio probably would have been relegated to the junkpile.

Why Philips didn't go the extra mile and put real buttons on this radio is a mystery.


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 Post subject: Re: Holiday Project: Philips D2935 keypad restoration
PostPosted: Jan Sat 04, 2014 1:09 am 
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Location: SoCal, 91387
Primitiveradiogod wrote:
Why Philips didn't go the extra mile and put real buttons on this radio is a mystery.

Production cost, both in material and labor. No mystery. :wink:

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 Post subject: Re: Holiday Project: Philips D2935 keypad restoration
PostPosted: Jan Mon 27, 2014 12:06 pm 
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Joined: Jan Mon 27, 2014 12:02 pm
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I too have a Philips D2935 with a cracked membrane. Any chance of uploading a pdf of the photoshoot or EM to me

Regards

Christopher from the UK


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 Post subject: Re: Holiday Project: Philips D2935 keypad restoration
PostPosted: Feb Tue 11, 2014 11:24 pm 
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Joined: Feb Tue 11, 2014 11:14 pm
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I too would be interested in getting a copy of this template if it isn't too much trouble...
It looks fantastic.

Thanks for your effort in keeping another good radio in use instead of the junk bin.


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 Post subject: Re: Holiday Project: Philips D2935 keypad restoration
PostPosted: May Mon 05, 2014 12:50 pm 
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Joined: May Mon 05, 2014 12:28 pm
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Hi Primitiveradiogod I saw your work on your keypad of Philips D2935 great job. I have the same problem with keypad of my Philips D2935 . How I can to receive the file to print the keypad?
Thank you very much John.


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 Post subject: Re: Holiday Project: Philips D2935 keypad restoration
PostPosted: Nov Wed 26, 2014 7:40 pm 
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Joined: Nov Wed 26, 2014 4:58 pm
Posts: 5
Dear Primitiveradiogod,

I am lucky to find your Project!
Today I have received the D2935, which I have bought via "willhaben.at" and faced the same problem.
Is it possible to have your Artwork file or, even better, the ready made replacement cover? I will compensate you for the troubles. I like the radio very much.

Regards Val


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 Post subject: Re: Holiday Project: Philips D2935 keypad restoration
PostPosted: Nov Wed 26, 2014 8:58 pm 
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Joined: Aug Fri 29, 2014 6:17 pm
Posts: 2577
Location: Vincennes Indiana
Wow great job and yeah those are classic sw boxes.


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 Post subject: Re: Holiday Project: Philips D2935 keypad restoration
PostPosted: Nov Wed 26, 2014 10:59 pm 
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Joined: Apr Fri 30, 2010 7:16 pm
Posts: 650
Location: Valencia, California
I have seen and had experience with a seller on E-Bay that sells "replacement" membranes for this radio for some time. Not sure if he is still doing that but I bought one a while back and it was an EXACT duplicate of the original but made with a UV resistant self adhesive polimer matt finish sheet.......peel and stick! I'd take a picture of it but I sold the radio........all I can say is that it looked NOS when done!
Your method looks excellent as well......good job!


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 Post subject: Re: Holiday Project: Philips D2935 keypad restoration
PostPosted: Nov Thu 27, 2014 7:18 am 
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Joined: Nov Wed 26, 2014 4:58 pm
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Hi Froggy 115,

Have you got by chance that E-Bay seller contacts?


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 Post subject: Re: Holiday Project: Philips D2935 keypad restoration
PostPosted: Nov Thu 27, 2014 4:36 pm 
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Joined: Apr Fri 30, 2010 7:16 pm
Posts: 650
Location: Valencia, California
No, I'm sorry I don't. I did search E-Bay but it doesn't appear that he has a listing at this time. His listings were under "Magnavox" versus "Phillips" under the same model number D- 2935. You may want to check periodically as he listed these for over a year.


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 Post subject: Re: Holiday Project: Philips D2935 keypad restoration
PostPosted: Nov Thu 27, 2014 5:27 pm 
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Joined: Nov Wed 26, 2014 4:58 pm
Posts: 5
Thank you, I will to search again. Pity.


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 Post subject: Re: Holiday Project: Philips D2935 keypad restoration
PostPosted: Nov Thu 27, 2014 5:37 pm 
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Joined: Dec Sun 22, 2013 5:03 am
Posts: 2382
Location: Santa Cruz mountains
By popular demand, just in time for the holidays, here is the D2935 Artwork I came up with last year:

JPG Version:

http://techpreservation.com/d2935/d2935_keypad.jpg

Compressed TIFF version:

http://techpreservation.com/d2935/d2935_keypad.tif

Uncompressed TIFF version (the uncompressed file is HUGE:

http://techpreservation.com/d2935/d2935_keypad.rar

Depending on your radio You MAY have to adjust the size slightly for an exact fit.

Legal stuff:

This artwork is PUBLIC DOMAIN and you are free to use it for any purpose whatsoever. Feel free to make it available for download anywhere.


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 Post subject: Re: Holiday Project: Philips D2935 keypad restoration
PostPosted: Nov Thu 27, 2014 5:56 pm 
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Joined: Nov Wed 26, 2014 4:58 pm
Posts: 5
Thank you very much!
This is a good spirit!
If you are a HAM I could give you files for DSB speech compressor I have developed.


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 Post subject: Re: Holiday Project: Philips D2935 keypad restoration
PostPosted: Nov Sat 29, 2014 12:00 pm 
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Joined: Nov Wed 26, 2014 4:58 pm
Posts: 5
Thanks again for the file.
It took me 40 min to make it like this.
I could do it better the second time, but it will last long.


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 Post subject: Re: Holiday Project: Philips D2935 keypad restoration
PostPosted: Mar Sat 28, 2015 4:37 am 
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Joined: Aug Wed 19, 2009 1:33 am
Posts: 193
@Primitiveradiogod

Is there any reason why you changed the yellow color for a white one ?


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 Post subject: Re: Holiday Project: Philips D2935 keypad restoration
PostPosted: May Fri 31, 2019 9:44 am 
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Joined: May Fri 31, 2019 9:35 am
Posts: 1
I come across this post in 2019, looking for a way to restore my father's old D2935. Unfortunately the links for the artwork don't work anymore; would there be a way to receive them? Would appreciate that a lot!!


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