AIWA 4 Band Stereo Radio Cassette Recorder - UK Vintage Radio Repair and Restoration Discussion Forum

Bigears · 23rd Jun 2018, 8:08 pm

Hi Guys,

I have a AIWA 4 Band Stereo Radio Cassette Recorder, Stereo 250 which I can get stations on FM but I seem to get nothing on MW LW or SW nothing what so ever just total silence, any help would be most appreciated.

Regards, Ken.

Hybrid tellies · 26th Jun 2018, 9:08 am

Not familiar with this model so not sure what type of circuitry it uses, discreet components or integrated circuits.
Try cleaning the wavechange switch first then it's down to finding a circuit diagram and either tracing the signal or using a signal injector working back from the volume control.

Nickthedentist · 26th Jun 2018, 9:57 am

As Simon rightly says, clean the wavechange switch first of all; spray some Servisol Super 10 into the actual switch mechanism on the PCB, then operate the switch back and forth quickly for a minute or so.

Nick.

Bigears · 26th Jun 2018, 3:13 pm

Thanks I'll try that
Regards

Nickthedentist · 26th Jun 2018, 4:06 pm

Looks like a typical mid-1980s unit, so almost certainly IC based: https://www.radiomuseum.org/r/aiwa_4...tereo_250.html

23rd Jun 2018, 8:08 pm	#1
Bigears Pentode Join Date: Nov 2017 Location: Durham, County Durham, UK. Posts: 144	AIWA 4 Band Stereo Radio Cassette Recorder Hi Guys, I have a AIWA 4 Band Stereo Radio Cassette Recorder, Stereo 250 which I can get stations on FM but I seem to get nothing on MW LW or SW nothing what so ever just total silence, any help would be most appreciated. Regards, Ken.

26th Jun 2018, 9:08 am	#2
Hybrid tellies Nonode Join Date: Jan 2004 Location: 1966-1976 Coverack in Cornwall and Helston Cornwall. 1976-present Bristol/Bath area. Posts: 2,965	Re: AIWA 4 Band Stereo Radio Cassette Recorder Not familiar with this model so not sure what type of circuitry it uses, discreet components or integrated circuits. Try cleaning the wavechange switch first then it's down to finding a circuit diagram and either tracing the signal or using a signal injector working back from the volume control. __________________ Simon BVWS member

26th Jun 2018, 9:57 am	#3
Nickthedentist Dekatron Join Date: Jan 2005 Location: Oxford, UK. Posts: 17,843	Re: AIWA 4 Band Stereo Radio Cassette Recorder As Simon rightly says, clean the wavechange switch first of all; spray some Servisol Super 10 into the actual switch mechanism on the PCB, then operate the switch back and forth quickly for a minute or so. Nick.

26th Jun 2018, 3:13 pm	#4
Bigears Pentode Join Date: Nov 2017 Location: Durham, County Durham, UK. Posts: 144	Re: AIWA 4 Band Stereo Radio Cassette Recorder Thanks I'll try that Regards

26th Jun 2018, 4:06 pm	#5
Nickthedentist Dekatron Join Date: Jan 2005 Location: Oxford, UK. Posts: 17,843	Re: AIWA 4 Band Stereo Radio Cassette Recorder Looks like a typical mid-1980s unit, so almost certainly IC based: https://www.radiomuseum.org/r/aiwa_4...tereo_250.html