York 863 audio chip
- NightProwler
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York 863 audio chip
Hey all, Quick question about audio chips. I got a York 863 here and the volume is quiet, It has to be almost all the way up to hear anything and also there is no out going audio. Could this be the audio chip or do I need to look elsewhere?
Cheers everyone...Rich
Cheers everyone...Rich
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Re: York 863 audio chip
It may be because of the mic' issue. When you haven't got a mic' plugged into a Cybernet-based radio, the audio is very very low. If the mic' is faulty it might not make a circuit that brings the audio alive? Try another cybernet-type mic' in it.
I'm no expert on mic's or radio internals though so I may be talking out of my bottom
I'm no expert on mic's or radio internals though so I may be talking out of my bottom
- NightProwler
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Re: York 863 audio chip
The mic is fine as I tried it on another York 863 I have, The internal speaker is also fine
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- cb4ever104
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Re: York 863 audio chip
What about an external speaker Rich . Still the same ?
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Paul aka "Sammy". (108) PY60 Old Paisley DX Group (RIP Rab Markie)
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Handle "Fortune Hunter" back in "the day"
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Paul aka "Sammy". (108) PY60 Old Paisley DX Group (RIP Rab Markie)
Ex GM0 , now EA5 .
Handle "Fortune Hunter" back in "the day"
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- NightProwler
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- NightProwler
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Re: York 863 audio chip
Do audio chips act like this when they go 'bad' or is it a case of they either work or they dont, If that makes sense?
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- Buick Mackane
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Re: York 863 audio chip
Could be a faulty electrolytic capacitor in the audio chain
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- cb4ever104
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Re: York 863 audio chip
Don't know . Never had a faulty one (yet ) . You really need a scope so that you can do some measuring .NightProwler wrote: ↑24 Apr 2018, 12:59 Do audio chips act like this when they go 'bad' or is it a case of they either work or they dont, If that makes sense?
Sammy
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Paul aka "Sammy". (108) PY60 Old Paisley DX Group (RIP Rab Markie)
Ex GM0 , now EA5 .
Handle "Fortune Hunter" back in "the day"
Radios ....? Anything that says "TAIWAN R.O.C" on the back.
Paul aka "Sammy". (108) PY60 Old Paisley DX Group (RIP Rab Markie)
Ex GM0 , now EA5 .
Handle "Fortune Hunter" back in "the day"
Radios ....? Anything that says "TAIWAN R.O.C" on the back.
- NightProwler
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Re: York 863 audio chip
Thats what I was thinking old beanBuick Mackane wrote: ↑24 Apr 2018, 13:17 Could be a faulty electrolytic capacitor in the audio chain
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- sickboy
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Re: York 863 audio chip
Here's a handy page for your bookmarks
http://www.m0ysu.com/CybernetRepairsPage-2017.html
Especially this part:
Replace audio IC (TA7205) which also sometimes affects outgoing modulation too. NB. If you rub your finger across the back of the
Audio IC with the volume up and it makes a sound chances are the IC is fine and the fault lies elsewhere. If its completely dead its
more than likely the Audio IC.
http://www.m0ysu.com/CybernetRepairsPage-2017.html
Especially this part:
Replace audio IC (TA7205) which also sometimes affects outgoing modulation too. NB. If you rub your finger across the back of the
Audio IC with the volume up and it makes a sound chances are the IC is fine and the fault lies elsewhere. If its completely dead its
more than likely the Audio IC.
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- NightProwler
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Re: York 863 audio chip
Ahhh Ive just tried that and it made no difference, I'll borrow an audio chip from another Cybernet radio and that should tell me. I dont really want to do that but at least I will know. Cheers Stevesickboy wrote: ↑24 Apr 2018, 17:33 Here's a handy page for your bookmarks
http://www.m0ysu.com/CybernetRepairsPage-2017.html
Especially this part:
Replace audio IC (TA7205) which also sometimes affects outgoing modulation too. NB. If you rub your finger across the back of the
Audio IC with the volume up and it makes a sound chances are the IC is fine and the fault lies elsewhere. If its completely dead its
more than likely the Audio IC.
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- cb4ever104
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Re: York 863 audio chip
Put your tongue on the power connector terminals as well to see if the 12V is present
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Paul aka "Sammy". (108) PY60 Old Paisley DX Group (RIP Rab Markie)
Ex GM0 , now EA5 .
Handle "Fortune Hunter" back in "the day"
Radios ....? Anything that says "TAIWAN R.O.C" on the back.
Paul aka "Sammy". (108) PY60 Old Paisley DX Group (RIP Rab Markie)
Ex GM0 , now EA5 .
Handle "Fortune Hunter" back in "the day"
Radios ....? Anything that says "TAIWAN R.O.C" on the back.
- NightProwler
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Re: York 863 audio chip
I'll dangle my balls over the board instead
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Re: York 863 audio chip
Look at the caps just behind the audio chip.
C105 tends to fail.
Also while you are in there check C78 just in front of the 455 filter as almost everyone i have seen lately has started leaking.
C105 tends to fail.
Also while you are in there check C78 just in front of the 455 filter as almost everyone i have seen lately has started leaking.
- NightProwler
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Re: York 863 audio chip
Just had a quick look and C102 appears to be leaking, The others look ok. I'll replace them and report back. Thanks for your help
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