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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: Drummerboy on November 15, 2009, 08:33:56 PM

Title: -Damage in Video Chip?
Post by: Drummerboy on November 15, 2009, 08:33:56 PM
Hello,

Sometime i hear about if you conect two monitors to the Amiga, can be damage a Amiga Video Chip. For example, if you uses the Video Composer and RGB outputs in the same time to 2 diferentes monitors.

Can be true this?.

If not, can be damage a Video Chip,  if you use a Video Composer  output and in the RGB conector you have a 23 to VGA adaptor withuot monitor?  

Thats a two rumors i hear  a few years ago. I used Amigas with 2 monitors but after hear this i m not do again.

Exists any diference in possible damage in Amiga OCS, ECS or AGA?

Coments.. are welcome

regards
Title: Re: -Damage in Video Chip?
Post by: Amiduffer on November 15, 2009, 08:56:58 PM
I used a Cybergraphix64/3D with a VGA and the regular video output on a 1084s at the same time with an A4000 and there was no problem.
Title: Re: -Damage in Video Chip?
Post by: Drummerboy on November 15, 2009, 09:17:12 PM
Humm.. ok... you know the rumors says something like thats uses will be killing the Video chip, any Overload..
Title: Re: -Damage in Video Chip?
Post by: Zac67 on November 15, 2009, 09:19:24 PM
Nope. I've been using up to three monitors for years (RTG & Flickerfixer, standard RGB, A2024), there's no problem. As long as you're using different output ports, there's not even a remote possibility of damaging anything.

You can also connect more than one monitor to a single output - if you do that with a simple split cable, the picture grows a bit darker (due to several termination resistors in parallel), but there are amplifiers to get around that.

Actually, it's quite impossible to damage the 'video chip' Denise since the analogue RGB outputs are driven by the 'vidiot' hybrid (pre-AGA at least).
Title: Re: -Damage in Video Chip?
Post by: save2600 on November 15, 2009, 09:22:10 PM
Overload should not be a problem here. We're talking about inconsequential voltages into negligible loads - unlike an audio power amplifier into a set of speakers.  

Besides, these machines were designed to consumer friendly. They wouldn't have more ins and outs than a transsexual-nazi-eskimo without littering the computer and manuals up without warning labels everywhere ;-)
Title: Re: -Damage in Video Chip?
Post by: Drummerboy on November 15, 2009, 09:59:58 PM
Ok,

Then, in any A1200 Desktop (without Video Cards), can keep conected to RGB Output any 23 pins to VGA Adaptor (without monitor) (adaptor pic  attached) and conected via video  Composer to Video RCA Monitor, and not will damaged the Video A1200 chip?.. Right?
Title: Re: -Damage in Video Chip?
Post by: save2600 on November 15, 2009, 10:22:55 PM
Quote from: Drummerboy;529738
Ok,

Then, in any A1200 Desktop (without Video Cards), can keep conected to RGB Output any 23 pins to VGA Adaptor (without monitor) (adaptor pic  attached) and conected via video  Composer to Video RCA Monitor, and not will damaged the Video A1200 chip?.. Right?


Right!
Title: Re: -Damage in Video Chip?
Post by: jrfjunior on November 16, 2009, 01:43:31 AM
Hi, I use the RGB and the composite video outputs simultaneously. No problem here.

Quote from: Drummerboy;529723
Hello,

Sometime i hear about if you conect two monitors to the Amiga, can be damage a Amiga Video Chip. For example, if you uses the Video Composer and RGB outputs in the same time to 2 diferentes monitors.

Can be true this?.

If not, can be damage a Video Chip,  if you use a Video Composer  output and in the RGB conector you have a 23 to VGA adaptor withuot monitor?  

Thats a two rumors i hear  a few years ago. I used Amigas with 2 monitors but after hear this i m not do again.

Exists any diference in possible damage in Amiga OCS, ECS or AGA?

Coments.. are welcome

regards
Title: Re: -Damage in Video Chip?
Post by: Drummerboy on November 16, 2009, 02:06:33 AM
Quote from: jrfjunior;529761
Hi, I use the RGB and the composite video outputs simultaneously. No problem here.


cOOL, WICH aMIGA mODEL?