Did the 500+ battery forgot the 501's

ceedy · 23 February 2011, 22:15

Suddenly remembered the 2 501's lying in the box ..after the mess left by the 500plus battery.

Ripped them apart. well carefully .

and found this ..

the bat on the left looked the worst all furry and horrid .
and the one one the right looked ok apart from a bit of rust ...
but look at the mess its left all round the board.
its leeched all round under the laquer on the Ground plane mostly .. yuk..

We will see if they still live ??
C.

rkauer · 24 February 2011, 03:47

Probably both will be OK. Do the neutralizing+cleaning routine, let the boards dry up, add (or not) a proper CR3025 holder + diode instead the barrel battery and apply nail varnish over the affected area after all checked & proven working.

ceedy · 24 February 2011, 11:45

Both work ok .. will do the same as I did on the Plus

a Coin holder and rechargable..

Just found another, a fluffy battery but hardly any corrosion. will still clean/ lemon flavour

and revarnish.

C....

8bitbubsy · 25 February 2011, 02:41

Why did you not write "WARNING: Grotesque torture pictures" in the topic title?
I almost got a heart attack when I saw the card to the right... It's a fortune the damage only ate the clock area of the board.

ceedy · 25 February 2011, 20:18

Quote:

Originally Posted by 8bitbubsy

Why did you not write "WARNING: Grotesque torture pictures" in the topic title?
I almost got a heart attack when I saw the card to the right... It's a fortune the damage only ate the clock area of the board.

It was just as bad on the reverse side..

But no tracks were lost and this afternoon they all got laquered and new coin battery holders..

and they all work perfectly despite the looks .

..

prowler · 25 February 2011, 23:43

Quote:

Originally Posted by ceedy

It was just as bad on the reverse side..

But no tracks were lost and this afternoon they all got laquered and new coin battery holders..

and they all work perfectly despite the looks .

..

An extremely fortunate example of "Just In Time" Amiga kit resurrection there, Chris!

ceedy · 26 February 2011, 12:24

Quote:

Originally Posted by prowler

An extremely fortunate example of "Just In Time" Amiga kit resurrection there, Chris!

yup

Once I get my rechargable 2032's I can solder the cases back on and hide all the nasty looking hhistory

Now it on to CAP's PSU's and the 20 odd Spectrums I have to sort out

And my lil bag of CF adaptors has turned up from HK today ! so more to do!

Take my word for it Even tho' I'm slightly retired there's never enough time to do stuff !!

C.

rkauer · 27 February 2011, 02:49

They will work OK after a bit of TLC.

ElectroBlaster · 27 February 2011, 16:29

Ive got one of those boards like the left one. All the chips are socketed. I removed the nasty old battery and thankfully the damage was very small, hardly anything to write home about. But afaik it didnt work when I tested it... this was years ago when I aquired 20 odd a500's that needed sorting out.
I wonder if its worth saving?

orange · 27 February 2011, 22:07

@electroblaster
I got the same board and same problem. thinking about socketing the chips, but can't help wondering if its worth the effort.
there must be a way to test individual chips.
for eg, one zx repair manual says resistance across voltage supply and GND pins should be over some value

23 February 2011, 22:15	#1
ceedy Old-Amiga-Git Join Date: Feb 2011 Location: Somerset , in the UK Posts: 175	Did the 500+ battery forgot the 501's Suddenly remembered the 2 501's lying in the box ..after the mess left by the 500plus battery. Ripped them apart. well carefully . and found this .. the bat on the left looked the worst all furry and horrid . and the one one the right looked ok apart from a bit of rust ... but look at the mess its left all round the board. its leeched all round under the laquer on the Ground plane mostly .. yuk.. We will see if they still live ?? C.

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24 February 2011, 03:47	#2
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	Probably both will be OK. Do the neutralizing+cleaning routine, let the boards dry up, add (or not) a proper CR3025 holder + diode instead the barrel battery and apply nail varnish over the affected area after all checked & proven working.

24 February 2011, 11:45	#3
ceedy Old-Amiga-Git Join Date: Feb 2011 Location: Somerset , in the UK Posts: 175	Both work ok .. will do the same as I did on the Plus a Coin holder and rechargable.. Just found another, a fluffy battery but hardly any corrosion. will still clean/ lemon flavour and revarnish. C....

25 February 2011, 02:41	#4
8bitbubsy Registered User Join Date: Sep 2009 Location: Norway Posts: 1,708	Why did you not write "WARNING: Grotesque torture pictures" in the topic title? I almost got a heart attack when I saw the card to the right... It's a fortune the damage only ate the clock area of the board.

27 February 2011, 02:49	#8
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	They will work OK after a bit of TLC.

27 February 2011, 16:29	#9
ElectroBlaster Junior Member Join Date: Mar 2002 Location: Exeter, Devon, UK Age: 49 Posts: 1,705	Ive got one of those boards like the left one. All the chips are socketed. I removed the nasty old battery and thankfully the damage was very small, hardly anything to write home about. But afaik it didnt work when I tested it... this was years ago when I aquired 20 odd a500's that needed sorting out. I wonder if its worth saving?

27 February 2011, 22:07	#10
orange Registered User Join Date: Apr 2007 Location: Belgrade Posts: 567	@electroblaster I got the same board and same problem. thinking about socketing the chips, but can't help wondering if its worth the effort. there must be a way to test individual chips. for eg, one zx repair manual says resistance across voltage supply and GND pins should be over some value

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