Build Your Own Arcade Controls Forum

Main => Monitor/Video Forum => Topic started by: ncflagg on July 04, 2007, 05:11:46 pm

Title: Sharp XM 1801 tube swap?
Post by: ncflagg on July 04, 2007, 05:11:46 pm: Hello.

I picked this Super Mario Bros (I know it's super mario because it has obvious burn-in) monitor hoping it was a Sanyo 20 but it's clearly not that. Can anyone identify it? Would it hook up to my Nintendo vs Unisystem?

Thanks
Title: Re: Name that monitor (Super Mario)
Post by: SirPeale on July 04, 2007, 06:01:24 pm: Found some stuff...you have a label on the side of your monitor.

http://homearcade.org/BBBB/XM-2001N.html

Another Link (http://www.cgcc.ca/forum/viewtopic.php?t=3089&sid=399ee8aa83483fa06018082c57e39492)
Title: Re: Name that monitor (Super Mario)
Post by: Kevin Mullins on July 05, 2007, 01:50:30 am: :cheers:
Title: Re: Name that monitor (Super Mario)
Post by: ncflagg on July 05, 2007, 07:35:16 pm: I hooked this monitor up to a Nintendo vs cab and replaced a fuse. It sounds like it is trying to power up but all I get is a loud clicking sound (maybe from the flyback transformer). Does anyone know where to get a flyback for this Sharp XM-180IN (or think this would help)?
Title: Re: Name that monitor (Super Mario)
Post by: Ken Layton on July 05, 2007, 08:07:40 pm: If it hasn't been recapped you should do that.

There's something else you can do to isolate flyback troubles. With all the lights in the room off and everything pitch black, power up the monitor. If the flyback is bad you'll see sparking/arcing/static electricity dancing around.

Remember, flybacks for this model have been unavailable for nearly 20 years. Sharp discontinued the flybacks long ago.
Title: Re: Name that monitor (Super Mario)
Post by: ncflagg on July 06, 2007, 04:29:19 pm: If the flyback is bad and there is no suitable replacement then is it a very combersome paperweight or is there anything salvagable?
Title: Re: Name that monitor (Super Mario)
Post by: Ken Layton on July 06, 2007, 08:26:19 pm: I have successfully used an 8liners.com replacement chassis on this monitor. However you won't be able to use it "as-is" on Nintendo games because it doesn't have video inversion nor sound amplifier built-in.

I use these as replacement monitors in JAMMA applications.
Title: Re: Name that monitor (Super Mario)
Post by: ncflagg on August 05, 2007, 05:37:32 pm: Can I hook this monitor up to the 100v output that the Sanyo EZV20 uses or does it need 120v?
Title: Re: Name that monitor (Super Mario)
Post by: Ken Layton on August 05, 2007, 08:27:37 pm: Both the Sharp XM-1801 and XM-2001 monitors operate on 100 volts AC.

The 8liners "Jen Shinn" replacement chassis has a built-in switching power supply and will operate perfectly fine on 100 volts AC.
Title: Re: Name that monitor (Super Mario)
Post by: ncflagg on August 05, 2007, 09:21:14 pm: I started to dismantle the monitor to put the cap kit in when I discovered a busted circuit board on the bottom where some control pots are (volume, bright ,hold etc). It was almost broken in half. I bypassed the broken circuitry with wire and powered up the monitor. The monitor now stays on and the volume control works but I can't see anything. I turned some of the other repaired pots but got nothing. This monitor has a degauss switch (it did nothing when i tried it...made no noise either). I have found that there is continuity across the the two pins of the degauss switch at the mainboard. I would think that this should not be the case... If i unplug this cable from the board the switch tests fine but when it's plugged in I get a constant beep from my meter.

I have yet to install the cap kit.

Thoughts?
Title: Re: Name that monitor (Super Mario)
Post by: SirPeale on August 06, 2007, 03:32:22 am: Quote from: ncflagg on August 05, 2007, 09:21:14 pm
I have yet to install the cap kit.

Thoughts?

Install the cap kit.
Title: Re: Name that monitor (Super Mario)
Post by: ncflagg on August 08, 2007, 07:14:02 pm: I installed the cap kit with no new results. The sound amplifier in the monitor still works and I have a black screen. I do find it odd that there is continuity over the contacts for the degauss switch. Where can I go from here?
Title: Re: Name that monitor (Super Mario)
Post by: Kevin Mullins on August 08, 2007, 11:52:41 pm: Quote from: ncflagg on August 05, 2007, 09:21:14 pm
I have found that there is continuity across the the two pins of the degauss switch at the mainboard. I would think that this should not be the case... If i unplug this cable from the board the switch tests fine but when it's plugged in I get a constant beep from my meter.

It sounds as if you are actually measuring the degauss COIL itself with the cable plugged in. (across the switch contacts)
If the monitor was powering up properly then the degauss circuit would open the PTC shortly after turning on and then you would not measure the coil.
Title: Re: Name that monitor (Super Mario)
Post by: ncflagg on August 10, 2007, 03:31:38 am: Ok, so I'll stop thinking about the degauss switch. I can see that the neck of the tube is lit up...what does that tell me?

Also, I can hear that the H-Hold is doing something. If I unplug the video cable the sound pitch of the monitor also changes.
Title: Re: Name that monitor (Super Mario)
Post by: ncflagg on August 12, 2007, 10:18:50 pm: I've noticed that many (but not all) off the Nintendo monitors I've seen have video inverter boards and output from "non inverted" if they are from nintendo pcbs. The Sharp monitor I have did not come with an inverter board...do I need one anyway for signal amplification or something?
Title: Re: Name that monitor (Super Mario)
Post by: ncflagg on August 30, 2007, 11:18:44 am: Okay you do not need the inverter board. My other Nintendo monitors work fine without one.

Will the Sharp XM 1801 17" monitor power a 19" tube? I want to see if the tube is the problem....