F4/FMPAC Light Combo Board project

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By Alexey

Guardian (2441)

Alexey's picture

08-05-2016, 16:17

Bastion Rebel wrote:

a small error on your list
the resistance of 174k is not good
to be read and not 170k 174k
174 is the link to the resistance SMD 170000 ohms, so 174 !!

The board says 170k indeed, but you can safely use 174k. This has verified to work OK.

By blackmsx

Expert (76)

blackmsx's picture

15-05-2016, 04:32

OX wrote:

will it install ok on a Sony HB-F9P?

It wont fit on a HB-F9P/S. You wont be able to place the board on the Z80 socket; will collide with the expansion slots...

Too bad, I wanted one of these for my F9s...

By OX

Resident (33)

OX's picture

21-05-2016, 00:34

Ah bugger, thanks for letting me know blackmsx.

By Storm

Supporter (5)

Storm's picture

23-05-2016, 13:47

Hi,
is it possible to buy one of these PCB's? I'm very interested in it for my Philips VG-8235/20

By Alexey

Guardian (2441)

Alexey's picture

23-05-2016, 20:46

Storm wrote:

Hi,
is it possible to buy one of these PCB's? I'm very interested in it for my Philips VG-8235/20

Just one board left out of 20. Please send me a PM or an e-mail if interested.

By Pablibiris

Paragon (1767)

Pablibiris's picture

25-05-2016, 22:38

Hi Alexey!
I dont find the 10K Resistor in the board Smile
Is a little error? Thanks!

By Alexey

Guardian (2441)

Alexey's picture

25-05-2016, 22:49

Pablibiris wrote:

Hi Alexey!
I dont find the 10K Resistor in the board Smile
Is a little error? Thanks!

On board v1.3 the 10k resistor R17 is near JP4 pins. On other boards it does not exist.

By Pablibiris

Paragon (1767)

Pablibiris's picture

26-05-2016, 22:41

oh!,ok Smile
Then I have the 1.2 version,I think.
I need to fix some bug in this version?
Thanks Alexey!

By Alexey

Guardian (2441)

Alexey's picture

26-05-2016, 22:50

Pablibiris wrote:

oh!,ok Smile
Then I have the 1.2 version,I think.
I need to fix some bug in this version?
Thanks Alexey!

Yes, the silkscreen has an error - if you assemble F4 port, please make sure you solder 74ls74 on the place marked 74ls125. And 74ls125 should be soldered on the place marked 74ls74.

By Pablibiris

Paragon (1767)

Pablibiris's picture

26-05-2016, 22:54

Nice!,thanks again Big smile
I hope I'm not too affected by the lack of those extra blocking capacitors and extra noise suppressing capacitor in the new version Wink

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