Whites 6000 Metal Detector Coinmaster Technical Discussion. Electronics Related

[inductor]

hello,


i am looking for any information \ documentation on some older whites metal detectors.
i have a few units that i am trying to recondition and have found it hard to find technical information.


for example: digrams, the tuning pots on the circuit boards,...

[Klumsy]

I need a schematic for a White's electronics Coinmaster 6000/D sries 3 from 1983. I need to identify the burnt up IC shown in this picture.

thanks.

http://i.imgur.com/ZXZGoiZ.jpg (direct)

[mdetectors.com]

Hallo Dear Freinds,
we have some problems with Whites Prizm /Coinhunter/ model.
After some time pinpoint go down, but the metal detector works withowt any problem - only pinpoint take loud permanent sound.
Are you familiar with this problem?
Do you know how ti fix it?
Thanks...