I recently got a sony kv-25xbr to replace my dead arcade monitor, and I'm having a really hard time with making a cable. I've tried tons of different combinations on the advice of others, but can't get in contact with anyone who has got this specific monitor to work. It seems the sony PVMs that have the computer input are a little different
Here is the pinout, but like I said I need some help! Thanks!
http://www.hardwarebook.info/Sony_RGB_Multi_Input
Help with Sony 25XBR
Re: Help with Sony 25XBR
Curious...
Hard making the cable or just hard getting it to work? I presume monitor actually works on another input fine? ... And you're want to connect a 31khz [computer] or 15khz [jamma/tv] signal?
Do you get any picture with your rgb cable or just black?
My first initial thought would be to the rgb switch line + grnd... I don't suppose you have any details what that's supposed to be? But I don't know... this wouldn't/couldn't be used for vga if such? The other thing is on something like scart the 'blanking' signal is the rgb/normal switch but here there's a seperate blanking pin?... ergh...
... you got a button that can turn on rgb mode instead of relying on a remote/signal?
My second thought is I'd simply make sure you provide a ground for each of r+g+b as well as grounds for H + V sync.
Hard making the cable or just hard getting it to work? I presume monitor actually works on another input fine? ... And you're want to connect a 31khz [computer] or 15khz [jamma/tv] signal?
Do you get any picture with your rgb cable or just black?
My first initial thought would be to the rgb switch line + grnd... I don't suppose you have any details what that's supposed to be? But I don't know... this wouldn't/couldn't be used for vga if such? The other thing is on something like scart the 'blanking' signal is the rgb/normal switch but here there's a seperate blanking pin?... ergh...
... you got a button that can turn on rgb mode instead of relying on a remote/signal?
My second thought is I'd simply make sure you provide a ground for each of r+g+b as well as grounds for H + V sync.
Re: Help with Sony 25XBR
I can assemble the cable just fine (I used to work as a nasa assembler), it's figuring out how to connect the 34pin connector to 15khz jamma/ console RGB.
I connected the set with composite video and it works wonderfully. There is a button on the front of the set that toggles between normal and rgb mode, so I know that works fine.
I get only black picture, and I've tried connecting the ground to both the digital/analog RGB pin and also the normal/rgb pin.
I've tried the separate grounds for each corresponding pin and also connected the grounds together and that didn't help, I'm starting to think it's maybe the blanking pin. How does that work exactly? I find info on the net for blanking pins and scart, do I assume it's the same for this?
Thanks for the help btw!
I connected the set with composite video and it works wonderfully. There is a button on the front of the set that toggles between normal and rgb mode, so I know that works fine.
I get only black picture, and I've tried connecting the ground to both the digital/analog RGB pin and also the normal/rgb pin.
I've tried the separate grounds for each corresponding pin and also connected the grounds together and that didn't help, I'm starting to think it's maybe the blanking pin. How does that work exactly? I find info on the net for blanking pins and scart, do I assume it's the same for this?
Thanks for the help btw!
Re: Help with Sony 25XBR
Cool...
... I suppose the first thing to mention is I've never [knowingly] used one of these 34 pin slots before.
The thing with an rgb switch signal is that you usually never need it on a sony tv that has an rgb button/remote button - once switched the set stays switched - at least until turned off.
If the set has no rgb button switch then you need a scart rgb blanking signal to maintain it in rgb mode - otherwise it changes back.
Typically in scart a 'blanking' signal switches the set to rgb and a 'switch' signal is actually an aspect ratio change signal - I don't know if there's some terminology jumble in those pinouts in me reading those 34 pin pinouts...
So yes my bet may well be towards that blanking signal given what you've already said about thorough grounding tests and still no picture.
The only thing is, I've absolutely no idea what this blanking signal should be - in scart its a signal over 1 volt up to ? [*wikipedia says 3v] - but for this 34 pin [something that came before scart?] I've no idea what kind of voltage etc. it might be expecting, and what damage you might do if you got this wrong.
http://www.videokarma.org/showthread.php?t=117701 <- this thread seems to mention a series of other sets that used it - basically the sony 'profeel' range... I've also seen reference to a tuner that used this port. Perhaps finding info on one of these could help with your tv?
** oh theres also this thread - seems to suggest a HV split of the sync:
http://shmups.system11.org/viewtopic.ph ... 74&start=0
... I suppose the first thing to mention is I've never [knowingly] used one of these 34 pin slots before.
The thing with an rgb switch signal is that you usually never need it on a sony tv that has an rgb button/remote button - once switched the set stays switched - at least until turned off.
If the set has no rgb button switch then you need a scart rgb blanking signal to maintain it in rgb mode - otherwise it changes back.
Typically in scart a 'blanking' signal switches the set to rgb and a 'switch' signal is actually an aspect ratio change signal - I don't know if there's some terminology jumble in those pinouts in me reading those 34 pin pinouts...
So yes my bet may well be towards that blanking signal given what you've already said about thorough grounding tests and still no picture.
The only thing is, I've absolutely no idea what this blanking signal should be - in scart its a signal over 1 volt up to ? [*wikipedia says 3v] - but for this 34 pin [something that came before scart?] I've no idea what kind of voltage etc. it might be expecting, and what damage you might do if you got this wrong.
http://www.videokarma.org/showthread.php?t=117701 <- this thread seems to mention a series of other sets that used it - basically the sony 'profeel' range... I've also seen reference to a tuner that used this port. Perhaps finding info on one of these could help with your tv?
** oh theres also this thread - seems to suggest a HV split of the sync:
http://shmups.system11.org/viewtopic.ph ... 74&start=0
Re: Help with Sony 25XBR
actually the other thread just recommends using a clean sync signal instead of composite video (as sync). I highly doubt that seperate H/V sync are needed for a 15khz signal.
teetu, what source are you talking about ?I connected the set with composite video and it works wonderfully
Re: Help with Sony 25XBR
The funny thing is I have found numerous threads on different forums where people have figured it out, but they never post what they did to get it working!Fudoh wrote:actually the other thread just recommends using a clean sync signal instead of composite video (as sync). I highly doubt that seperate H/V sync are needed for a 15khz signal.
teetu, what source are you talking about ?I connected the set with composite video and it works wonderfully
I've been trying to connect it to my arcade vga and my sega saturn (I hooked up the saturn via composite video cable to make sure the set was working fine).
It seems as though people are saying the set doesn't need the sync separator, but I'm not sure if I need to connect the Hsync and Vsync, or does it just need the Hsync? One person even mentioned taking the h and vsync from the source and combining them to the hsync pin on the sony.
Aside from my sync questions, there is a pin that is labeled analog/digital rgb and am wondering how I can toggle that on and off- perhaps it's in digital and I need to switch it back to analog. I tried connecting it to ground but it made no difference.
I'm all ears here and I've put banana jacks on a lot of the wires- so I can try out any suggestions!
Thanks for the help!
Re: Help with Sony 25XBR
I'm guessing your rgbs [typically 15khz jamma uses a composite sync] sync should be going in on pin 30.
The thing in my mind is that even if your sync is fcked you should still be getting some kind of picture on the screen [scrolling or incorrect color/brightness].
My memory is a bit 50/50 on whether you get something on typical sony crt if rgb switch wasn't occurring - I'm pretty sure I have one screen that shows nothing and another which does... so that doesn't necessarily indicate any issue. Do the other threads you found all talk about a black screen when rgb mode isn't sorted? [I hate it when they don't post their solution
]
*The mode issue also appears separate from the rgb switch issue: http://www.electronicspoint.com/sony-kp ... 53118.html
The thing I'm tip-toeing around is whether the rgb mode needs to be sorted, or whether the socket might be broken :/ At the moment I am thinking its more likely to be the rgb mode issue rather than broken, but I'd hate to be wasting your time if it was.
The thing in my mind is that even if your sync is fcked you should still be getting some kind of picture on the screen [scrolling or incorrect color/brightness].
My memory is a bit 50/50 on whether you get something on typical sony crt if rgb switch wasn't occurring - I'm pretty sure I have one screen that shows nothing and another which does... so that doesn't necessarily indicate any issue. Do the other threads you found all talk about a black screen when rgb mode isn't sorted? [I hate it when they don't post their solution
]*The mode issue also appears separate from the rgb switch issue: http://www.electronicspoint.com/sony-kp ... 53118.html
The thing I'm tip-toeing around is whether the rgb mode needs to be sorted, or whether the socket might be broken :/ At the moment I am thinking its more likely to be the rgb mode issue rather than broken, but I'd hate to be wasting your time if it was.
Re: Help with Sony 25XBR
Man I've tried everything. Anyone have any other ideas!?