White's PI3000 re-build

[GeoMax]

Hi KT315,

The numbers are not deleted. They are printed below the resistor. It looks at my PI1000 the same.
The only different I can see is the big damping resistor. This resistor in my PI1000 is 1/2W and 5R6 Ohms. In Pete's picture it looks like a 18 Ohm 1W resistor.

[Octopulse]

Great! Happy hunting.

“I love the smell of napalm in the morning. It smells like victory”

I just love that movie.

"Napalm yes"...."Resistor no"

[kt315]

Hi KT315,

The numbers are not deleted. They are printed below the resistor. It looks at my PI1000 the same.
The only different I can see is the big damping resistor. This resistor in my PI1000 is 1/2W and 5R6 Ohms. In Pete's picture it looks like a 18 Ohm 1W resistor.

ok. i am feeling i must tell you about the aspect more detailly, as i can with my english.
Whites uses (used) very specific individual code on their boards printed. this ID code is corresponding to:

1. a schematic.
2. board revision.

it is just for inner using in the company.
ERGO, conclusions. EVERY Whites' pcb has the code and you can sure know what you see and what you wait from a pcb.
in present case of this PI3000 - look attachment.

[GeoMax]

Hi,

okay... you mean the PCB version number. You are right in Pete's PCB it is missing on the bottom layer. The PCB version number of my PI1000 is 505-0128.

[kt315]

that is. some notes at the schematic for a pcb with the ID code. unreadable while.

[dbanner]

18 ohms might have been for some of the older coils??? It doesn't look like it's been changed, it looks like an original resistor. Have a look at the foil side of the 18ohm board to see if it's been replaced at some later stage, I doubt it.
This resistor (R16) was meant to limit the peak current in the coil.

Some of the date codes on the chips from that board seem to indicate 1982? If I'm reading it correctly. Im not sure.

[GeoMax]

Two different series of the PI1000 were released back then. Perhaps the pictures of Pete's are PI1000 Series 1 which do not have the PCB version number on it. Mine is definitely a PI1000 Series 2 and has a PCB version number on it.

[kt315]

no, it is original resistor. as i remember he went in forum to ask about burnt resistor R44.

[kt315]

i need pics of the 3000's board and connection. do please under the light. partically desolder it. then i will reload all archive and give a link. my email [email protected]

Pleasure