Rygar

[Lurch666]

Got a rygar that's running but with graphic glitches as seen in this thread:
https://www.ukvac.com/forum/threads/pcb-repair.85201/#post-587714

Started with the four LS153s that mix the various video signals at 9C,9D,9E and 9F but they checked out as working but noticed inactivity on some of the inputs.

Wasn't sure which inputs were text (as it appears that corruption is bad text all over the screen) so I used my video probe and found the VDAT inputs were producing the text.

Found this was generated from the rom at 8K. Checked the rom and that was fine and fortunately the ram was socketed so swapped with known good but that made no difference either.
I next used my scope to check the addressing on the rom and found A13 and A14 were inactive.

This was fed from an LS174 at 9J. This checked out as inactive but OK as far as the slice could tell.
The inputs came from another LS174 at 9K and that one tested bad. Piggybacked it and all graphics are now fine so I'll be replacing that one.

Board is also reported to be crashing after a time so will soak test it and see if I can find out what is causing that.

 

[Lurch666]

Spoke too soon.
Didn't realize the background was out,mountains showing black,more investigation required.

 

[griffo83x]

The black mountains do look pretty cool though against that sunset , gives it a more sinister look to the game , what are the background like on later levels

 

[griffo83x]

i dont think that black background is a fault , its a black back ground when in demo mode , should be green when you credit it up and play it

 

[TheDaddy]

Getting there mate , Looks like your having a better ' Repair Day ' than me ! lol.

Dave.

 

[griffo83x]

 

[griffo83x]

other pic in demo mode black background , this pic when playing

 

[kingtreelo]

the soundtrack on this game is amazing, one of my favourite sounding games ever

 

[Lurch666]

Should have checked in mame.
You are correct,the demo mode has the sun where on the start of the first level it's blue sky.
In my defense I've not played this game much so not so familiar with it.
Since it takes a while for the game to start after the text I was just letting to go into demo mode to see if the mountains were black,good job I didn't spend much time trying to fix something that wasn't wrong.

Still need to do a soak test to see if it crashes but at least the graphics are good.

 

[Lurch666]

the soundtrack on this game is amazing, one of my favourite sounding games ever

Got to disagree,Rastan saga has a much better soundtrack

 

[Lurch666]

Played up to level 9 last night (using lots of credits).
Will try again today if I get the chance.
If I can play as long again I'll assume it's ok.

 

[patzik]

Should have checked in mame.
You are correct,the demo mode has the sun where on the start of the first level it's blue sky.
In my defense I've not played this game much so not so familiar with it.
Since it takes a while for the game to start after the text I was just letting to go into demo mode to see if the mountains were black,good job I didn't spend much time trying to fix something that wasn't wrong.

Still need to do a soak test to see if it crashes but at least the graphics are good.

Lol! I made the exact same mistake repairing this game, also had not played it and thought there were missing graphics 😂