Anyone got the schematics for Trojan?

XianXi

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Looking for the sound schematics, got a board missing the analog channel. And this dam board mask doesn't help at all. Can't see any traces.

It uses the same amp as the Neo, a HA13001. I might just have to probe around if no one knows.

Also, does this board suicide at all? My customer says the board should have a crisp picture but when I use the jamma adapter I get a scrambled picture like a teen watching PPV.
 
Looking for the sound schematics, got a board missing the analog channel. And this dam board mask doesn't help at all. Can't see any traces.

It uses the same amp as the Neo, a HA13001. I might just have to probe around if no one knows.

Also, does this board suicide at all? My customer says the board should have a crisp picture but when I use the jamma adapter I get a scrambled picture like a teen watching PPV.

I have looked for you and can't seem to find one and the one on e-pay I think is just a manual.
 
Thanks for looking, I'm gonna try and go off the MVS one. I know 3 and 4 are inputs so I just need to trace them back to where the mix is.
 
So this board has 2 x YM2203s. Both are not putting anything out on the analog channels, each one has 3 analog channels. Weird thing too is that the IRQ pins are dead, shouldn't they be held high?
 
It turns out that I need a 384khz ceramic resonator as the one on the board is broken. I'm having a very hard time finding this part. Does anyone have a parts board with it?

It looks like a blue square capacitor but plastic, mine says 384B N on one side with a K on the top of it.
 
You have a PM with a lead... Maybe you can get them to source you a sample.

As for the picture issue, I've seen that on different boards on my testbench when the video ground is missing.
 
You have a PM with a lead... Maybe you can get them to source you a sample.

As for the picture issue, I've seen that on different boards on my testbench when the video ground is missing.

Oh ya, the video ground missing was due to a bad board adapter.
 
I have some...look like these in the pic?
It appears these have recently become obsolete. I bought these from mouser not too long ago but they are now showing them as not available.
 
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I have some...look like these in the pic?
It appears these have recently become obsolete. I bought these from mouser not too long ago but they are now showing them as not available.

Yup those are the ones. If I need them I'll let you know.

The legs on these things are flimsy so I recommend anyone soldering them down to leave no space between the resonator and board. The one on the board was soldered at the tips of the leads so it caused it to bend back and forth so over time the legs broke off.
 
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