1084S D2 vs. 1084ST/1081 Horizontal Amp

retroregen · 06 February 2022, 23:45

I'm lucky enough to own all 3 of the above displays, all in lovely condition & fully recapped by myself.

Anyway, I was wondering if the Philips variants (1081 & 1084ST in my case) suffered from lack of horizontal amplitude?

I ask because Workbench has a black borders left/right even at full amp with both Philips displays. However, I can fill the screen with the D2 (Daewoo) with amplitude to spare in the pot.

Jope · 07 February 2022, 19:19

No idea about the 1084ST, but the 1081 and 1084S by Philips have no problems filling the viewable area horizontally.

The 1084ST I know of is not made by Philips.
http://gona.mactar.hu/Commodore/moni...84ST_BBoAH.jpg

retroregen · 09 February 2022, 11:43

Could be a worn out potentiometer then I guess?

Apologies, 1084ST was made by Likom, however, suffers the same horizontal amp issue as the Philips.

Jope · 09 February 2022, 13:14

A worn out potentiometer usually causes jumps, and a flickering picture. This sounds more like a capacitor issue or a failing power supply.

06 February 2022, 23:45	#1
retroregen Registered User Join Date: Oct 2021 Location: WEYBRIDGE Posts: 2	1084S D2 vs. 1084ST/1081 Horizontal Amp I'm lucky enough to own all 3 of the above displays, all in lovely condition & fully recapped by myself. Anyway, I was wondering if the Philips variants (1081 & 1084ST in my case) suffered from lack of horizontal amplitude? I ask because Workbench has a black borders left/right even at full amp with both Philips displays. However, I can fill the screen with the D2 (Daewoo) with amplitude to spare in the pot.

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07 February 2022, 19:19	#2
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,904	No idea about the 1084ST, but the 1081 and 1084S by Philips have no problems filling the viewable area horizontally. The 1084ST I know of is not made by Philips. http://gona.mactar.hu/Commodore/moni...84ST_BBoAH.jpg

09 February 2022, 11:43	#3
retroregen Registered User Join Date: Oct 2021 Location: WEYBRIDGE Posts: 2	Could be a worn out potentiometer then I guess? Apologies, 1084ST was made by Likom, however, suffers the same horizontal amp issue as the Philips.

09 February 2022, 13:14	#4
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,904	A worn out potentiometer usually causes jumps, and a flickering picture. This sounds more like a capacitor issue or a failing power supply.

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