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NEC TG-16/TE/TurboDuo => TG/PCE Repair/Mod Discussion => Topic started by: choijimmy on February 23, 2015, 12:38:14 AM

Title: PC Engine GT recap Sound issue
Post by: choijimmy on February 23, 2015, 12:38:14 AM
Hi All,

 I just did a recap for another GT. The sounds works for few hours ( both headphone + speaker ).
Strange enough, after few hours, the speaker No longer has sound anymore ( the headphone still good ). For now, I tap the wire from the speaker jack to the speaker directly and works fine. However, the issue is the speaker will still On even you inserted the headphone.  :-k

This is 2nd time I ever see this issue... Any idea? I suspect the headphone jack issue ( eg, it always think there is headphone has been inserted, so disable the speaker... However, I am not so sure )
Title: Re: PC Engine GT recap Sound issue
Post by: choijimmy on February 23, 2015, 01:20:30 AM
Hi All,

 I just did a recap for another GT. The sounds works for few hours ( both headphone + speaker ).
Strange enough, after few hours, the speaker No longer has sound anymore ( the headphone still good ). For now, I tap the wire from the speaker jack to the speaker directly and works fine. However, the issue is the speaker will still On even you inserted the headphone.  :-k

This is 2nd time I ever see this issue... Any idea? I suspect the headphone jack issue ( eg, it always think there is headphone has been inserted, so disable the speaker... However, I am not so sure )


Yes, phone jack issue. Replace another one and works fine
Title: Re: PC Engine GT recap Sound issue
Post by: turbokon on February 24, 2015, 02:06:13 AM
Yeah, the phone jack has a pin that's connects to speaker circuit when the earphone is not plugged in.  Sometime this pin breaks. 
Title: Re: PC Engine GT recap Sound issue
Post by: choijimmy on February 24, 2015, 02:20:06 AM
Yeah, the phone jack has a pin that's connects to speaker circuit when the earphone is not plugged in.  Sometime this pin breaks. 

Thanks for the info
Jimmy