snakeGrave
Enthusiast
Hi All,
My MS2930 was acting strangely
-popping
-picture not always appearing on start up
So I recapped it and had similar results minus the popping.
I decided to try a replacement flyback, same as here in my 2931 https://www.arcade-projects.com/forums/index.php?threads/ms2931-screen-randomly-expands.13553/
I did adjust the HV pot as well to reduce the picture size like on the 2931 in the thread above. I have not checked the B+ voltage as I've been unable to locate and information on what this value should be for the 2930.
Everything looks good now however the image on screen is reduced in size and out of focus on start up. After about 5 minutes the picture enlarges and then comes into focus. Its not a huge deal but I'd like to address it if I am able. Also hoping it is not indicative of a failing tube?
Most of what I am finding online is suggesting that the flyback should be replaced... I do have another spare that I am thinking of trying out. I have also seen some suggestions to clean/inspect the neckboard/socket.
Has anybody had a similar experience to this? Can anyone provide B+ information for this monitor?
EDIT: after 15 minutes of being shut down then powering back on the image looks good on startup. It takes maybe an hour of being shut down for it to "lose focus"
images here
Thanks much,
-Andy
My MS2930 was acting strangely
-popping
-picture not always appearing on start up
So I recapped it and had similar results minus the popping.
I decided to try a replacement flyback, same as here in my 2931 https://www.arcade-projects.com/forums/index.php?threads/ms2931-screen-randomly-expands.13553/
I did adjust the HV pot as well to reduce the picture size like on the 2931 in the thread above. I have not checked the B+ voltage as I've been unable to locate and information on what this value should be for the 2930.
Everything looks good now however the image on screen is reduced in size and out of focus on start up. After about 5 minutes the picture enlarges and then comes into focus. Its not a huge deal but I'd like to address it if I am able. Also hoping it is not indicative of a failing tube?
Most of what I am finding online is suggesting that the flyback should be replaced... I do have another spare that I am thinking of trying out. I have also seen some suggestions to clean/inspect the neckboard/socket.
Has anybody had a similar experience to this? Can anyone provide B+ information for this monitor?
EDIT: after 15 minutes of being shut down then powering back on the image looks good on startup. It takes maybe an hour of being shut down for it to "lose focus"
images here
Thanks much,
-Andy
Last edited: