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sony: Sony ICF-7800 speaker foam failure. Easy repair?

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Forum » Radios and other type of sets (Physics) etc. » MODELS DISPLAYED » sony: Sony ICF-7800 speaker foam failure. Easy repair?
           
Jose Mesquita
Jose Mesquita
 
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22.Jul.21 11:42

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I have recently acquired a Sony ICF-7800 in a so-so condition. It is working on all bands, despite some non identified issues on SW and MW bands where the symptoms are whistling around the tuned stations and loss of sensitivity (to be looked for at a later time).

The main issue is the speaker that shows a total foam ring degradation, unable to handle any level of bass. Treble works fine, though.

I have disassembled the radio to remove the major part of the damaged foam ring from the speaker, most of it freely laying around the enclosure.

Do you know of suitable speaker foam ring parts for this speaker? I found a few references in the Internet, but I wonder where these really are adequate.

 

 

Back cover removed to expose the speaker details:

  • SONY
  • 1-502-598-11
  • 1.4W 6.5 Ohm
  • 0837
  • JAPAN
  • J020

 

 

 

 

This article was edited 22.Jul.21 12:13 by Jose Mesquita .

Dietmar Rudolph
Dietmar Rudolph
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22.Jul.21 13:40

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You will find here in "Lautsprecher Reparatur" a method described, that works.

Regards, Dietmar

Jose Mesquita
Jose Mesquita
 
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22.Jul.21 13:43

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Thank you so much, Dietmar !

Jose Mesquita
Jose Mesquita
 
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29.Jul.21 14:54

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Meanwhile I think I was lucky to find a probable candidate to replace the damaged foam ring at the global auction website from a seller nicknamed as "scarlettchen" based in Hong Kong under the item number 122725139059.

Now I still have to find a way to remove the cardboard ring from the speaker without destroying it, in order to be able to install the new foam ring and put it back over the new foam ring.

 

 

 

  
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