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PostPosted: Thu Mar 18, 2010 6:44 pm 
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Joined: Thu Mar 18, 2010 6:21 pm
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Hello i have Philips 22 AH 799 receiver. İts worked perfectly after one day led display and raido has gone!!. Firstly i think led display chip(SAA 1060) burn or faulty. I got two piece new chip (SAA 1060) from ebay after replace them but it isnt working again. Led display work corectly but clock and radio (AM/FM/LW) cannot work and led dislpay shown some broken digit. İ think Micro Processor(Mostek 3870 MK14246N) failure or something... Someone help me please whats wrong with my device and what must i do to fix it.


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PostPosted: Thu Mar 18, 2010 10:11 pm 
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Rank: 22AH585

Joined: Fri Feb 11, 2005 11:02 am
Posts: 282
Location: Amersfoort
Hello,

Replace the 3? "big"capicitors around the microprocessor and the receiver will work again, to much ripple on the 5V for the uP.

Kind regards,

Willem


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PostPosted: Sat Mar 20, 2010 12:31 pm 
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thanks wro can you show me this ("big"capicitors ) exactly location on this
22 AH 799 Service Manuel pdf file. Best regards.
http://rapidshare.com/files/365801074/22ah799.pdf.html


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PostPosted: Sat Mar 20, 2010 1:23 pm 
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Location: Amersfoort
I replace normaly C2541, C2628, C2637 and C2638 on the microprocessor board.

Kind regards,

Willem

_________________
Groeten,

Willem

-------------------------------------------


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PostPosted: Wed Mar 24, 2010 10:41 am 
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Thank you so much Willem . It works perfectly like you said Best Regards.


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PostPosted: Wed Mar 24, 2010 2:05 pm 
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Location: Amersfoort
I am glad that you solved the problem.

Kind regards,

Willem :P


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PostPosted: Tue Aug 29, 2017 2:37 pm 
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Joined: Tue Apr 04, 2017 8:19 pm
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Hi Wro and Everyone;

I have Philips 22 AH 799 receiver and its not work correctly right now. When i plugged electricity cable i see the lights and clock correctly works but channel scan turn switch and fm/am channel lock function is not works properly (there is no sound and its not lock any channel) .I would like to ask you if you have faced this problem before how can i repair it please let me know. Thanks for your helps.

B.Regards
Cemal


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