Zenith (PSOne screen-style) Variations

Post by **CronoTriggerfan** » Tue Sep 04, 2007 7:35 pm

I was wondering if you guys noticed this, too; on the Zenith screens, the black ones for new consoles that look like PSOne screens, I've seen some slight motherboard variations between the models. I've had two of these so far (I think they were both Xbox, maybe one was PS2) and one was a single motherboard, while the other one had one motherboard and a daughterboard with the control components. Has anyone else ever run into this, and if so, is the difference visible in certain model numbers, or by console? I'm just wondering because I just ordered a Gamecube Zenith screen for a new portable (gotta have SOMETHING to occupy me after school!

) and I wanna be prepared going in. Thanks!

CTFan

Kurt_ · Post by **Kurt_** » Wed Sep 05, 2007 2:09 pm

My PS2 Zenith was a PSOne screen with a separate board for power. Removing it did nothing. There were 5 cables going into the screen section with a removable part so you could take it off, for some reason. It also has an extra filter cap on the power regulator. But take off all the crap and it's still a PSOne screen.

smariotti · Post by **smariotti** » Wed Sep 05, 2007 2:59 pm

I have one of those Zenith screens, and yeah, it looks like the guts of the Sony psOne screen put in a different housing.

I assume that all of the psOne screen hacks apply (cutting off the top of the board with the transformer, LED backlighting, etc.)

The input voltage is 7.5v from the wall wart, which it then converts to 5 for the board operation. If you're not using the CCFL backlight and are lighting it off of 5v, do you even need 7.5v at all?

vskid · Post by **vskid** » Wed Sep 05, 2007 3:36 pm

smariotti wrote:The input voltage is 7.5v from the wall wart, which it then converts to 5 for the board operation. If you're not using the CCFL backlight and are lighting it off of 5v, do you even need 7.5v at all?

I believe that there are a couple chips that need ~7.5v, theres got to be a reason, or else someone else would have done it before.

smariotti · Post by **smariotti** » Thu Sep 06, 2007 11:22 am

vskid wrote:
smariotti wrote:The input voltage is 7.5v from the wall wart, which it then converts to 5 for the board operation. If you're not using the CCFL backlight and are lighting it off of 5v, do you even need 7.5v at all?
I believe that there are a couple chips that need ~7.5v, theres got to be a reason, or else someone else would have done it before.

For those of you who have experience, how approximate is that 7.5? I have a battery of 1.2v cells (6 of them) for 7.2v, will that fly? What's the current drain on that thing anyways? With and without the CCFL?

I can make a 7 cell battery of 1.2v cells for 8.4v total, but will that over-volt the display? Come to think of it, the voltage coming off the voltage regulator on the daughter board is around 8v isn't it? Maybe that'd be the ticket.

vskid · Post by **vskid** » Thu Sep 06, 2007 3:30 pm

7.2-almost 9v is the safe voltage range, I think it draws 750mA with the CCFL, 300mA LED modded (thats what I've read, I'm not 100% sure on the mA values).

Kurt_ · Post by **Kurt_** » Thu Sep 06, 2007 4:20 pm

7.5V is for the unregulated video circuitry. 5V won't cut it.

Website · Post by **Life of Brian** » Fri Sep 14, 2007 10:50 pm

vskid wrote:7.2-almost 9v is the safe voltage range, I think it draws 750mA with the CCFL, 300mA LED modded (thats what I've read, I'm not 100% sure on the mA values).

I second your statement. From my experience, that's what it needs.

It's a lot easier to get a hold of the Zenith screens nowadays, isn't it? I've come across plenty for around $45 including shipping. That's a pretty sweet deal for a 5" lcd screen of such a nice quality.