Dragon's Lair Fans - Arcade Lifestyle

General Chat => Technical Area => Topic started by: drydien on September 18, 2009, 10:07:30 PM

Title: Got RTOJ but monitor has issue's
Post by: drydien on September 18, 2009, 10:07:30 PM: im very newbie to the arcade thing recently got several arcades that all need work for a really good price
Being a huge starwars fan i was really excited to get the rotj cab i got up and running game boots of perfectly
minus no sound and the screen takes alittle bit to loud up but it seems if Half the colors load up no greens blues on broken lines of black and brown at times
u can see the game running in the background but its very scattered image does this make sense?
any help would be great again i am a major newb

(http://img24.imageshack.us/img24/7373/downsized09030921062.jpg) (http://img24.imageshack.us/i/downsized09030921062.jpg/)

this is what it looks like for the most part give it about 10more mins a few more colors pop in
Title: Re: Got RTOJ but monitor has issue's
Post by: drydien on September 19, 2009, 07:41:27 AM: any help even a idea on which direction to start looking for the problems?
Title: Re: Got RTOJ but monitor has issue's
Post by: DarthNuno on September 19, 2009, 07:48:42 AM: Hi Drydien,

Well, regarding the picture it can be a lot of things and it would require a ton of explication only for learning you the basic checks :?
Maybe a short video of the problem would help us better...
Title: Re: Got RTOJ but monitor has issue's
Post by: Muerto on September 19, 2009, 08:26:59 AM: if it´s a rom error on the board, Irongiant from the Jamma+ forum is a wiz! - he fixed mine and it´s working 100% now!
look at this thread:
https://www.dragonslairfans.com/smfor/index.php?topic=899.0
Title: Re: Got RTOJ but monitor has issue's
Post by: drydien on September 19, 2009, 09:28:37 PM: wow thanks for the reply's atleast gives me a direction to start looking:) any help is great since im a newbie
but im trying to learn! fast i got a bunch of non op arcades that i need to get running lolool ( defender,rotj,poleposition,aquajack,sf2) ahha

btw ill get a video of the thing booting up tonight when i get home from work
Title: Re: Got RTOJ but monitor has issue's
Post by: drydien on September 21, 2009, 10:03:07 AM: sorry for the quality (cellphone) and its nighttime to better show u colors

anyways i got 3 video's booting up from cold and a video about 5mins later and another video about 5 more mins after that

colors slowly start to fade in but never fully displays all the colors Any help would be GREAT

http://www.youtube.com/watch?v=mYLNaOSzPts (http://www.youtube.com/watch?v=mYLNaOSzPts)this is a cold startup no picture

http://www.youtube.com/watch?v=6t1KNy5DMZA (http://www.youtube.com/watch?v=6t1KNy5DMZA) This is about 5mins later colors are starting to fade in and you can see the game in the background sorta

http://www.youtube.com/watch?v=Qb-69lp0cUQ (http://www.youtube.com/watch?v=Qb-69lp0cUQ) this is about 10-15mins after start up more colors but still messed up

any help would be awesome!
Title: Re: Got RTOJ but monitor has issue's
Post by: Irongiant on September 21, 2009, 05:55:28 PM: Quote from: Muerto on September 19, 2009, 08:26:59 AM
if it´s a rom error on the board, IronClaw from the Jamma+ forum is a wiz! - he fixed mine and it´s working 100% now!
look at this thread:
https://www.dragonslairfans.com/smfor/index.php?topic=899.0

Close, it's Irongiant, not Ironclaw. :D

Just signed up here as Muerto pointed me at this thread to see if I could help out drydien - I'll do my best. :)
Title: Re: Got RTOJ but monitor has issue's
Post by: Irongiant on September 21, 2009, 06:02:09 PM: Quote from: drydien on September 21, 2009, 10:03:07 AM
sorry for the quality (cellphone) and its nighttime to better show u colors

anyways i got 3 video's booting up from cold and a video about 5mins later and another video about 5 more mins after that

colors slowly start to fade in but never fully displays all the colors Any help would be GREAT

http://www.youtube.com/watch?v=mYLNaOSzPts (http://www.youtube.com/watch?v=mYLNaOSzPts)this is a cold startup no picture

http://www.youtube.com/watch?v=6t1KNy5DMZA (http://www.youtube.com/watch?v=6t1KNy5DMZA) This is about 5mins later colors are starting to fade in and you can see the game in the background sorta

http://www.youtube.com/watch?v=Qb-69lp0cUQ (http://www.youtube.com/watch?v=Qb-69lp0cUQ) this is about 10-15mins after start up more colors but still messed up

any help would be awesome!

Well, first I'll say that I'm no monitor expert (I only repair the game boards) - it's tempting to say that you have a combination of two faulty items, namely the monitor (taking ages to warm up) and the game board itself.

Of course, it may just be the game board that has a fault in the video display circuitry, ie a faulty chip that needs to warm up before things start working. Tricky to say for sure without looking at it on a test rig.

The sound issue is probably the game board (may be a bad LM324 op amp) but may also be down to, for example, the speaker in the cab, voltages or wiring. Maybe even a dodgy connection to the edge connector.

Can you check the voltages to the game board and verify that they are within the correct tolerances?
Title: Re: Got RTOJ but monitor has issue's
Post by: Muerto on September 21, 2009, 06:58:01 PM: hey Irongiant - glad you joined!
and my "litle mistake" is fixed ;)

Michael
Title: Re: Got RTOJ but monitor has issue's
Post by: Irongiant on September 21, 2009, 07:08:47 PM: Heh - ta! :D
Title: Re: Got RTOJ but monitor has issue's
Post by: DarthNuno on September 21, 2009, 08:19:02 PM: Welcome to the other part of the 'channel' Irongiant :-*

:spaceace: :spaceace: :spaceace:
Title: Re: Got RTOJ but monitor has issue's
Post by: Irongiant on September 21, 2009, 08:34:23 PM: Thank you kind sir. :)
Title: Re: Got RTOJ but monitor has issue's
Post by: Alpha1 on September 29, 2009, 03:43:43 PM: lol Ironclaw - that is really funny hehe