Build Your Own Arcade Controls Forum

Main => Monitor/Video Forum => Topic started by: s34n on March 06, 2013, 01:17:56 am

Title: Pentranic Arcade Monitor - Intermittent Buzzing Problem
Post by: s34n on March 06, 2013, 01:17:56 am

I left a machine sitting around for about a year or so, the machine was fine before, then suddenly nothing displays on the screen. I opened the back and I could hear intermittent buzzing coming from the monitor.

If anybody has any schematics or any reasons why this is happening, then please share! I can get the chassis number if required.

Here is a video of the buzzing... The lamp DOES light up on the tube (Can't tell from the video).
http://youtu.be/B9KWEkTyHEM (http://youtu.be/B9KWEkTyHEM)

Thanks for any insight!

Title: Re: Pentranic Arcade Monitor - Intermittent Buzzing Problem
Post by: dgame on March 06, 2013, 09:40:13 am

I was getting a similar buzz in my Wells D9200 and it turned out to be the surge protector.

When I googled the buzzing problem most suggestions pointed to something being wrong in the power circuit.

First I thing I tried was plugging it straight into the wall and the buzzing went away. Then I switched surge protectors.

Not saying that this is what your problem is but it can't hurt to try.

Title: Re: Pentranic Arcade Monitor - Intermittent Buzzing Problem
Post by: grantspain on March 06, 2013, 06:09:53 pm

if you have tube heaters and hear static on power up then monitor should be working
turn up screen volts on flyback transformer a little to see if you get a raster