shmups.system11.org

Shmups Forum
 
* FAQ    * Search
 * Register  * Login 
It is currently Tue Nov 13, 2018 6:49 pm View unanswered posts
View active topics



Post new topic Reply to topic  [ 1993 posts ]  Go to page Previous  1 ... 63, 64, 65, 66, 67
Author Message
 Post subject: Re: TV RGB mod thread
PostPosted: Mon Oct 29, 2018 10:39 pm 



Joined: 18 May 2017
Posts: 348
Diopter Doctor wrote:
I've tried using c-sync, same thing. I think I just have to put a switch in that connects and disconnects the Y input to the Jungle chip.
Is there another way around this?


You're the first one I know of to tackle this chassis so whatever you come up with will be the state of the art :-)

Perhaps this could be a good use of a 2 point switch to turn on blanking and disconnect Y at the same time.


Top
 Offline Profile  
 
 Post subject: Re: TV RGB mod thread
PostPosted: Tue Oct 30, 2018 2:39 pm 


User avatar

Joined: 07 May 2018
Posts: 204
A buddy found the below CRT in a dumpster outside an office building. He talked to a maintenance guy or something at the building, and he was more than happy to let him pick through their recylcing bin, since it would save him some money on having to get it recycled. The story behind it is it's a low usage screen that was only used for weekly presentations. My buddy grabbed it because its in great shape, and firing it up when getting it home, it works perfectly.

I'm hoping this one is a good candidate for modding, but the user manual is not helpful, and the only possible schematic or service manual I can find is something that has to be paid for. Anybody have any useful information on this one? I asked my buddy to open it up and start taking pictures so I can ID the jungle IC, but that hasn't happened yet, and I'm hoping to have schematics to cross reference.

model: Panasonic ct-32g22u
chassis: anpedp282


Top
 Offline Profile  
 
 Post subject: Re: TV RGB mod thread
PostPosted: Wed Oct 31, 2018 7:39 pm 


User avatar

Joined: 16 Sep 2018
Posts: 12
MarkOZLAD wrote:
Diopter Doctor wrote:
I've tried using c-sync, same thing. I think I just have to put a switch in that connects and disconnects the Y input to the Jungle chip.
Is there another way around this?


You're the first one I know of to tackle this chassis so whatever you come up with will be the state of the art :-)

Perhaps this could be a good use of a 2 point switch to turn on blanking and disconnect Y at the same time.


Still working on making everything look nice but getting clean RGB is finished!
I definitely recommend modding this chassis if you can get your hands on one.
Fairly simple to do. Tracing the board to find all of the ports is what took the most of my time.

G3F Chassis RGB injection schematic:
https://www.flickr.com/photos/159678005 ... ed-public/

S-video SMW
https://www.flickr.com/photos/159678005 ... ed-public/
https://www.flickr.com/photos/159678005 ... ed-public/

RGB SMW
https://www.flickr.com/photos/159678005 ... ed-public/
https://www.flickr.com/photos/159678005 ... ed-public/
And I get to keep my OSD as is:
https://www.flickr.com/photos/159678005 ... ed-public/


Top
 Offline Profile  
 
 Post subject: Re: TV RGB mod thread
PostPosted: Thu Nov 01, 2018 5:39 am 



Joined: 18 May 2017
Posts: 348
Diopter Doctor wrote:
MarkOZLAD wrote:
Diopter Doctor wrote:
I've tried using c-sync, same thing. I think I just have to put a switch in that connects and disconnects the Y input to the Jungle chip.
Is there another way around this?


You're the first one I know of to tackle this chassis so whatever you come up with will be the state of the art :-)

Perhaps this could be a good use of a 2 point switch to turn on blanking and disconnect Y at the same time.


Still working on making everything look nice but getting clean RGB is finished!
I definitely recommend modding this chassis if you can get your hands on one.
Fairly simple to do. Tracing the board to find all of the ports is what took the most of my time.

G3F Chassis RGB injection schematic:
https://www.flickr.com/photos/159678005 ... ed-public/

S-video SMW
https://www.flickr.com/photos/159678005 ... ed-public/
https://www.flickr.com/photos/159678005 ... ed-public/

RGB SMW
https://www.flickr.com/photos/159678005 ... ed-public/
https://www.flickr.com/photos/159678005 ... ed-public/
And I get to keep my OSD as is:
https://www.flickr.com/photos/159678005 ... ed-public/



Really nice work.

For the "large resistor" you talk about on the blanking line, any resistor from 470R up to around 2700R should be fine for that.

If you used a 470R the voltage divider would be 5V * 470 / (470+470) = 2.5V

For 1000R the voltage divider would be 5V * 470 / (470+1000) = 1.5V

For 2000R the voltage divider would be 5V * 470 / (470+2000) = 0.95V

a 2700R would get you 5V * 470 / (470+2700) = 0.74V

Glad you got a great result for your persistence. Persistence is a key skill for this hobby.


Top
 Offline Profile  
 
 Post subject: Re: TV RGB mod thread
PostPosted: Fri Nov 02, 2018 3:04 am 



Joined: 02 Nov 2018
Posts: 1
mikejmoffitt wrote:
NJRoadfan wrote:
One of these days, I'm going to have to try this with the 27" JVC D-Series sitting in the basement. The mod doesn't look to difficult to perform compared to some other sets.

The D-series was the first one I ever did, and those work very well:

Image

http://mikejmoffitt.com/articles/0032-tvrgb.html


Hello sir, I couldn't figure out PM'ing you.. anywho:

I just picked up a JVC av-27d500 and can't find any info on the chips or a service manual. Do you happen to have the service manual for this tv? This would be my first TV Im looking to try to RGB mod as well. Please excuse my noobness to the forum world


Top
 Offline Profile  
 
 Post subject: Re: TV RGB mod thread
PostPosted: Fri Nov 02, 2018 1:08 pm 



Joined: 06 Sep 2018
Posts: 21
MarkOZLAD wrote:
Sammickk wrote:
Ok i know am currently working with an Akai TV, but someone just offered me a Sony KV-24FV12. I tried searching the forum to see if anyone had mentioned this TV before but it didn't turn up anything.

I thought i was good at identifying TV's that Could be modded but it still seems I've got more to learn.

Here is the service manual
http://go-gddq.com/upload/2010-04/10040915469189.pdf (Don't bother with the one on Manuals library as its broken,huge chunks missing)

I see the jungle with RGB IN but don't see any blanking or even where is ties in with the OSD to do the Switch method.

Can anyone take a look?


Blanking is YS2/YM.

Suitable for OSD/External RGB Mux method as are all Sony BA-5 BA-5D Chassis


Ok I've been modding some of my console systems for a while now and now that I'm done with that, I want to re-investigate this Sony CRT. I want to try the Mux method but I'm still not very skilled in electronics, I took Your (MarkOZLAD's) calculator spread sheet and tried my best to make sense of it. See the pictures for what I've come up with and let me know if I'm anywhere near right. Full tv service manual link is above in the quotes if you need it, page 32 i think.
Spoiler: show
Image

Spoiler: show
Image

Spoiler: show
Image


Parts that confused me were about everything on the blanking line (pin 49) there's a capacitor in circuit with a 1k resister which both exit out through the diode and also close to the jungle chip, a coil inductor before the 100 ohm resister. I just added the 1k resister to the 100 ohm resister that I found on the line returning to the jungle chip.., is this correct? I just noticed pin 41 also goes the the blanking in on the jungle.. optional line?

also just a curious question, not important but if anyone has time to kill, what is the first set of RGB-IN lines coming from? pins 26,27,28


Top
 Offline Profile  
 
 Post subject: Re: TV RGB mod thread
PostPosted: Sun Nov 04, 2018 5:50 am 



Joined: 04 Nov 2018
Posts: 3
Hey guys, what a great thread this is. Seems like I am in a similar situation all around as the old mate Sammickk. I have an old Akai that I had planed to RGB mod but after some investigation on the IC used in it I can't see any RGB inputs. it has and OSD but seems it doesn't go in with RGB. Maybe I can mod this for S-Video.. But other than that set I have an Australian 21 inch Trinitron which should do a fairly standard rgb mod. a big Philips which has component in and a TEAC which already has a scart input.. thank the gods for that one... My plans are to use a Wii with emulation and component out on the big Philips and my Amigas on the scart TEAC, RGB mod whatever else I can find that will do it. Anyway that's just my introduction, early days for me :) but hopefully I have some success and can contribute to the thread.


Top
 Offline Profile  
 
 Post subject: Re: TV RGB mod thread
PostPosted: Sun Nov 04, 2018 11:12 am 



Joined: 04 Nov 2018
Posts: 3
Sammick what model Akai are you working on? did I read the other day you are in country Victoria? I am also and also have an Akai


Top
 Offline Profile  
 
 Post subject: Re: TV RGB mod thread
PostPosted: Mon Nov 05, 2018 12:55 am 



Joined: 18 May 2017
Posts: 348
Very interesting one. I believe O-YM is setting half tone RGB and O-OSDBLK is setting full contrast RGB.

A quick look at the maths of the circuits, when setting half tone we have 5V coming out from the micro controller going through a 10KR, an MA111TX diode and then has a 3.3K resistor to ground.

the forward voltage of MA111TX diode is 1.2V.

so we get (5V - 1.2V) * 3,300 / (10,000 + 3,300) = 0.94V. Let's say 1V for Half tone RGB

for O-OSDBLK we have 5V coming out from the micro controller going through a 1KR, an MA111TX diode and then has a 3.3K resistor to ground.

(5V - 1.2V) * 3,300 / (1,000 + 3,300) = 2.91V. Let's say 3V for full contrast RGB

For a quick and dirty blanking circuit I would be connecting up a switch to a 5V line and having an inline resistor of 2200R. I would connect this to either the leg of R1087 that isn't grounded or the ends of the Diodes D1012 or D1011 that are closest to the jungle. 5V * 3,300/(2,200+3,300) = 3V.

As for Pins 26/27 and 28, they are connected to 9V. Not sure why this is the case. Previous posters have said that these inputs are disabled by serial comms from the micro controller. I believe one poster had success in getting these inputs enabled by turning on service mode option bits (possibly all of them to 1 if I recall). Other advanced modders have hijacked the I2C serial bus to enable the extra ports.

Your use of the OSD mux spreadsheet is correct. Remove R1086, R1084 and R1085 and use 1,100R inline and 75R termination.


Top
 Offline Profile  
 
 Post subject: Re: TV RGB mod thread
PostPosted: Mon Nov 05, 2018 3:19 am 


User avatar

Joined: 09 Aug 2017
Posts: 992
Location: Australia
For blanking id feed the blanking scart pin directly to the blanking leg.
5v/180R/3.3k = 4.7v


Top
 Offline Profile  
 
 Post subject: Re: TV RGB mod thread
PostPosted: Tue Nov 06, 2018 10:50 pm 


User avatar

Joined: 07 May 2018
Posts: 204
Guys,

Is a TV with this jungle IC a good candidate for RGB modding? If I'm understanding everything I'm reading so far, it is, but just want to be sure from the experts.

Image


Top
 Offline Profile  
 
 Post subject: Re: TV RGB mod thread
PostPosted: Wed Nov 07, 2018 2:42 am 



Joined: 18 May 2017
Posts: 348
NoAffinity wrote:
Guys,
Is a TV with this jungle IC a good candidate for RGB modding? If I'm understanding everything I'm reading so far, it is, but just want to be sure from the experts.


Yes


Top
 Offline Profile  
 
 Post subject: Re: TV RGB mod thread
PostPosted: Tue Nov 13, 2018 8:49 am 


User avatar

Joined: 26 May 2015
Posts: 42
Location: Florida
I scored for free a 1983 NEC CT1901A crt and it works great and has two composite inputs.
Image

It obviously has no OSD,it sports a HA11436A for video and pins 15 through 17 are the rgb outputs that goes to the neckboard.

Here's all of the info I could find on the IC.
http://www.mediafire.com/file/15u39661i ... 8.pdf/file
http://www.mediafire.com/file/cy4xk7lwx ... 0.pdf/file

You guys this I should just let this tv be.


Top
 Offline Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 1993 posts ]  Go to page Previous  1 ... 63, 64, 65, 66, 67

All times are UTC


Who is online

Users browsing this forum: donluca, Google [Bot], Kabal2X, nmalinoski, Slash, Triple Lei and 10 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  
Space Pilot 3K template by Jakob Persson
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group