1990 Ford 2040 CD player problem

**Julesd** · 17th February, 2019, 09:51 PM

Hi everyone.
I have a 1990's Ford 2040 CD player that I need to get working.
I powered it up and display shows it's asking for code to be entered.
Powered it up again and shorting noise from PCB, now won't power up.
I notice because of it's age the some caps have burst. replaced all caps and now still won't power up.
Can anyone give me any pointers please? Is it possible it has blown a component somewhere?
seem to still have voltages bewtween 5 and 12V around the board but still not coming on.

Hope someone can help.
Thanks in advance.
Cheers,
Jules.

**tomic19** · 18th February, 2019, 12:19 PM

What is with protection diode? How much current does it takes when you connect +12v?
Some picture of PCB?

Regards

**Julesd** · 18th February, 2019, 02:25 PM

Thanks for reply tomic19.
Attached pics of PCB
Thanks.
Regards,

**tomic19** · 18th February, 2019, 02:51 PM

What is with protection diode? How much current does it takes when you connect +12v?

Regards

**Julesd** · 18th February, 2019, 02:54 PM

pcb draws about 50 ma when powered up

**tomic19** · 18th February, 2019, 03:04 PM

That is fine current for radio power. Are that 2 flat cables for display OK?

**Julesd** · 18th February, 2019, 03:23 PM

Yes they are OK. This unit did flash up asking for the code in the display before the caps blew.

**Julesd** · 18th February, 2019, 04:02 PM

Which is the protection diode please?

**Julesd** · 18th February, 2019, 05:50 PM

Hi again,
been testing points on the board, looks like it's the 5v that is missing.

**Julesd** · 20th February, 2019, 03:41 PM

Hi Tomic, are you OK?

**tomic19** · 20th February, 2019, 04:19 PM

It is hard to help me without boar in front of me. I sad what I can say like this.
Do you have some 78M05 regulator for 5V? Are the capacitors on the good polarity? Have you checked from where you need to get that 5V which is missing?