Help: EPROM of Philips CD880

LeoJar · 6th February 2004, 01:56 PM

dear all
my be loved CD880 suddently stopped working one night, no display and the transport turns non-stop.
After checking, the most possible cause of this malfunction may be due to defected EPROM

Anyone here and give a help in making a copy of this eprom or selling the eprom to me?

THanks,,,
Leo

Elso Kwak · 6th February 2004, 04:26 PM

Quote:

Originally posted by LeoJar
dear all
my be loved CD880 suddently stopped working one night, no display and the transport turns non-stop.
After checking, the most possible cause of this malfunction may be due to defected EPROM

Anyone here and give a help in making a copy of this eprom or selling the eprom to me?

THanks,,,
Leo

Hi Leo,
What is the type number?

martijn · 6th February 2004, 06:05 PM

The eprom is probably ok.I have had the same trouble a few weeks ago.It was just a supply problem.

martijn

LeoJar · 7th February 2004, 03:49 AM

Hi Elso,
The number of the eprom is p203

And Martijn, which part of power supply causes the problem, the transport??

THanks in advance....

Leo

martijn · 7th February 2004, 05:35 AM

Leo,

It was a bit weird,so it took some time to find it:a ground connection in the supply of the kill circuit was broken.This somehow affected the microprocessor(connected with the first and last pin IIRC)

Martijn

LeoJar · 7th February 2004, 06:39 AM

I will try to recheck the power again...Hope it is the cause

Cross the fingers...

Thanks a lot

Leo

LeoJar · 7th February 2004, 04:46 PM

Hi Martijn,

You are right. One of the ground wire was broken. In last time, I changed the cap (the middle one on the circuit board). May be the connection between two layers were nearly broken and so the ground was open in someday after changing the cap.

Thanks again and again...

Leo

6th February 2004, 01:56 PM	#1
LeoJar diyAudio Member Join Date: May 2003 Location: Hong Kong	Help: EPROM of Philips CD880 dear all my be loved CD880 suddently stopped working one night, no display and the transport turns non-stop. After checking, the most possible cause of this malfunction may be due to defected EPROM Anyone here and give a help in making a copy of this eprom or selling the eprom to me? THanks,,, Leo

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6th February 2004, 06:05 PM	#3
martijn diyAudio Member Join Date: Nov 2003 Location: nl	The eprom is probably ok.I have had the same trouble a few weeks ago.It was just a supply problem. martijn

7th February 2004, 03:49 AM	#4
LeoJar diyAudio Member Join Date: May 2003 Location: Hong Kong	Hi Elso, The number of the eprom is p203 And Martijn, which part of power supply causes the problem, the transport?? THanks in advance.... Leo

7th February 2004, 05:35 AM	#5
martijn diyAudio Member Join Date: Nov 2003 Location: nl	Leo, It was a bit weird,so it took some time to find it:a ground connection in the supply of the kill circuit was broken.This somehow affected the microprocessor(connected with the first and last pin IIRC) Martijn

7th February 2004, 06:39 AM	#6
LeoJar diyAudio Member Join Date: May 2003 Location: Hong Kong	I will try to recheck the power again...Hope it is the cause Cross the fingers... Thanks a lot Leo

7th February 2004, 04:46 PM	#7
LeoJar diyAudio Member Join Date: May 2003 Location: Hong Kong	Hi Martijn, You are right. One of the ground wire was broken. In last time, I changed the cap (the middle one on the circuit board). May be the connection between two layers were nearly broken and so the ground was open in someday after changing the cap. Thanks again and again... Leo

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