Amiga 4000 clock problems

cyberfox_it · 30 March 2011, 15:03

Hello,

i've just installed a coin battery kit replacement, but it does not keep the date/time.

The coin battery is ok, any idea on what could be the problem ?

fitzsteve · 30 March 2011, 15:20

Quote:

Originally Posted by cyberfox_it

Hello,

i've just installed a coin battery kit replacement, but it does not keep the date/time.

The coin battery is ok, any idea on what could be the problem ?

Did the old battery leak and cause any damage?

Jope · 30 March 2011, 16:16

Using a multimeter and the A4000 schematics, measure that the power and ground make a connection from the coin cell to the clock chip.

FOL · 30 March 2011, 17:06

As jope said.

But 9 times out of 10, its battery leakage as steve said.
Could be clock latching chip, clock chip or track damage.

Check the legs and board for corrosion.

cyberfox_it · 30 March 2011, 21:46

There's no leakage, and no corrosion near the battery...

Where is located the clock chip ?

FOL · 30 March 2011, 23:27

Quote:

Originally Posted by cyberfox_it

There's no leakage, and no corrosion near the battery...

Where is located the clock chip ?

Photo's may help.

Richo chip is the clock one. latching is to the left of battery, if looking at board with memory slots on right.

30 March 2011, 15:03	#1
cyberfox_it Registered User Join Date: Jun 2009 Location: Verona/Italy Age: 51 Posts: 38	Amiga 4000 clock problems Hello, i've just installed a coin battery kit replacement, but it does not keep the date/time. The coin battery is ok, any idea on what could be the problem ?

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30 March 2011, 16:16	#3
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,863	Using a multimeter and the A4000 schematics, measure that the power and ground make a connection from the coin cell to the clock chip.

30 March 2011, 17:06	#4
FOL PSPUAE DEV Join Date: Nov 2006 Location: Wales / UK Age: 45 Posts: 6,007	As jope said. But 9 times out of 10, its battery leakage as steve said. Could be clock latching chip, clock chip or track damage. Check the legs and board for corrosion.

30 March 2011, 21:46	#5
cyberfox_it Registered User Join Date: Jun 2009 Location: Verona/Italy Age: 51 Posts: 38	There's no leakage, and no corrosion near the battery... Where is located the clock chip ?

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