Anyone try restoring Csync on a NS1 N64 with passive components ?

[the_crayon_king]

So it should be possible right ? The missing components between the two (NTSC) I have in front of me are:

C22:

R14:

R1:

Q1:

R16:

R15:

 

Ill check the schematics to see if I can get the values (otherwise I will use my magnifier)

Just wonder if its been done or worth the effort VS using the lm1881

It would deff be cheaper to use the passive components (I think)

 

 

[the_crayon_king]

This would be for the NUS-CPU-04 models some have Csync some do not.

Had to use my lens:

 

C22: My guess is 0.1uf - 1uf

R14:(750) 75Ω

R1: (301) 300 Ω

Q1: BQ35 (2SC2412 [sOT-346 MAY BE A DIFF PACKAGE]) http://shop.lumaco.co.uk/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/2/s/2sc2412_1.jpg

R16:(102) 1k Ω

R15:(103) 10k Ω

 

Resistor/capacitor sizes either 0603 or 0402 (id guess 0402)

 

 

Capacitor would probably be the same as the others in the area; having trouble finding a schematic.

The end goal would be a simpler restore of C sync. Ill check the values again when I come across another board

Digikey parts list at 0603 size http://www.digikey.com/short/3r7qn5
Cost around 70cents.

 

The lm1881 mod would cost around 3.50$

Edited December 27, 2016 by the_crayon_king

[the_crayon_king]

Ok I guess I am triple positing here but leaving this for future reference:

 

[the_crayon_king]

I know its been like a year. If anyone wanted to do this then this would be easier to follow as a schematic:

C22 is probably 330pf like the SNES has on its csync. The red and black PCB board shown above outlines the general layout as it is on the board itself.

 

Package size of resistors/cap is 0603. I still believe the transistor is SOT-346

 

If I am remembering correctly this puts out 1V c sync on the TV end.

Updated cart with 100x of needed items: http://www.digikey.com/short/qj1dv2

 

Edited February 19, 2018 by the_crayon_king