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General Category => Amstrad CPC hardware => Topic started by: eto on 00:15, 16 May 25

Title: 27" QHD monitor Philips 275E1S - accepts CPC signal
Post by: eto on 00:15, 16 May 25
Maybe this is interesting for someone...

I just bought this monitor for my man cave and out of pure curiosity I connected the CPC to its VGA input. And guess what... it works. A passive adapter is all you need. It also works for the Atari ST in both colour and mono resolutions. The image quality is not as perfect as on the NEC 1970NX but it's not bad.

This is (to my knowledge) one of the few QHD monitors and the only 27" QHD monitor that can sync to 15kHz. The model I bought was built in Sep 2024, so it's not even old stock.

Unfortunately not with smooth softscrolling in Ghosts'n Goblins, Relentless and Super Edge Grinder but e.g. Red Sunset perfectly works.
Title: Re: 27" QHD monitor Philips 275E1S - accepts CPC signal
Post by: Bryce on 08:17, 16 May 25
Looks like Philips used a TV chip in a monitor. Cool.

Bryce.
Title: Re: 27" QHD monitor Philips 275E1S - accepts CPC signal
Post by: eto on 10:30, 16 May 25
Quote from: Bryce on 08:17, 16 May 25Looks like Philips used a TV chip in a monitor. Cool.
I was really surprised. Even most TVs I tried did not accept 15kHz on their VGA port but only via Scart. 
Title: Re: 27" QHD monitor Philips 275E1S - accepts CPC signal
Post by: Bryce on 14:40, 16 May 25
It would be interesting to open it up and see what chipset it uses.

Bryce.
Title: Re: 27" QHD monitor Philips 275E1S - accepts CPC signal
Post by: GUNHED on 21:40, 19 May 25
How about a MODE 2 picture?  :)
Title: Re: 27" QHD monitor Philips 275E1S - accepts CPC signal
Post by: eto on 23:23, 19 May 25
Quote from: GUNHED on 21:40, 19 May 25How about a MODE 2 picture?  :)
sure
Title: Re: 27" QHD monitor Philips 275E1S - accepts CPC signal
Post by: eto on 08:38, 20 May 25
Just to be clear: 27" imho is not a great fit for such a resolution. I would always prefer a 12-15" LCD over it for regular use. But for a quick test every now and then this is really convenient. 
Title: Re: 27" QHD monitor Philips 275E1S - accepts CPC signal
Post by: dodogildo on 10:56, 20 May 25
There's a 24" version. I wonder if it has the same compatibility: 
https://www.amazon.de/Philips-245E1S-DisplayPort-Reaktionszeit-FreeSync/dp/B07SPCWZHP
Title: Re: 27" QHD monitor Philips 275E1S - accepts CPC signal
Post by: GUNHED on 16:46, 21 May 25
Quote from: eto on 23:23, 19 May 25
Quote from: GUNHED on 21:40, 19 May 25How about a MODE 2 picture?  :)
sure
Thanks! Looks really awesome form here!  ;) :) :)
Title: Re: 27" QHD monitor Philips 275E1S - accepts CPC signal
Post by: Bryce on 18:19, 21 May 25
Quote from: dodogildo on 10:56, 20 May 25There's a 24" version. I wonder if it has the same compatibility:
https://www.amazon.de/Philips-245E1S-DisplayPort-Reaktionszeit-FreeSync/dp/B07SPCWZHP

That's why I said it would be interesting to know what chipset the monitor uses. If they used the same one, then there's a good chance the 24in version is also 15kHz compatible.

Bryce.
Title: Re: 27" QHD monitor Philips 275E1S - accepts CPC signal
Post by: eto on 21:38, 21 May 25
Must be done by someone who has a better record of not breaking things. 
Title: Re: 27" QHD monitor Philips 275E1S - accepts CPC signal
Post by: SerErris on 18:51, 22 June 25
I would love to test the 24" version. How did you connect it ? Just a simple RGB->VGA cable that connects just the lines, or did you need to mod it with resistors (75Ohms) ? 

If  I would have a correct cable (will order one), then I will testorder a 24" version of that Monitor.
Title: Re: 27" QHD monitor Philips 275E1S - accepts CPC signal
Post by: eto on 00:27, 23 June 25
Quote from: SerErris on 18:51, 22 June 25I would love to test the 24" version. How did you connect it ? Just a simple RGB->VGA cable that connects just the lines, or did you need to mod it with resistors (75Ohms) ?

If  I would have a correct cable (will order one), then I will testorder a 24" version of that Monitor.
yes a simple 1:1 connection

(https://www.cpcwiki.eu/imgs/thumb/c/cd/ModernLCD_CPC2VGA1.JPG/300px-ModernLCD_CPC2VGA1.JPG)
Title: Re: 27" QHD monitor Philips 275E1S - accepts CPC signal
Post by: Apollo on 18:34, 30 June 25
I want to add that I have the 27" 4K Philips 272P7VPTKEB and I did a quickndirty try yesterday on the VGA input and it accepts 15kHz signal from my Plus.
The monitor has an incredible good picture in general that is why I use it as a secondary high quality monitor on my main PC.

I will do some test this evening and post them with pictures in a seperate thread to not pollute this one.
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