PVM Bowing Issue

[pheonixman]

Hi All
Recently got a Sony PVM-2950QM and I'm facing some issue with bowing to the image top and bottom of the screen, having done a little research I may have the same issue mentioned here

https://www.reddit.com/r/crtgaming/comments/js55uh

.

As my soldering skills are non-existent is anyone able to look at servicing this monitor for me and fixing this issue?
Images below with Dreamcast connected, also tested with my Mega Drive and it's the same, if I set the DC game to run at 60Hz it helps a little but think this is just because the image is stretching the full screen.

 

[Fantazia2]

Does it not have a service menu with pincushion etc adjustment?

 

[pheonixman]

Hi
Yes it does but I'm not sure it will pull that out? I don't have the original remote though so not sure I am able to save the changes easily.

 

[Fantazia2]

You would be surprised, I had a Sony small widescreen CRT TV (Like 19" or something, years ago) and that had an issue with its saved settings and the picture was all over the place.

 

[FrancoB]

The geometry settings typically have a fairly wide range of adjustment, I don't think the amount of adjustment you need will be out of range unless you are right on the extent of the settings which probably isn't the case.

I see you have a Mega Drive and a DC. Can you use either to play ROMs/backups? If so grab your self a copy of [240p test suite]. You can use this to display various grids etc that make it much easier to adjust geometry/convergence/colours than using a game displaying. I typically use Grid test screen for geometry checks/adjustment but there are a load of other test screens too.



If you don't have a MD or DC that can play ROMs etc then you might have another supported platform. The full list is:

Sega Genesis (Mega Drive), Sega CD (Mega CD), Sega Dreamcast, PC Engine/Turbografx-16, NES, Super Nintendo/Super Famicom (SNES/SFC), Game Boy, Game Boy Advance, Nintendo GameCube, Nintendo Wii and Sony PlayStation.

 

[pheonixman]

Thanks for the Advice both of you, I'm going to try and see if I can adjust the geometry first then using the service menu if I can find a remote which works.
I did see in the manual that H-Bow is an adjustment so maybe that could help.

 

[pheonixman]

Quick update on my issue with this Sony PVM, after managing to get into the service menu using a mobile phone with remote software and adjusting a couple of settings for Pin Amp, V Amp H Bow etc unfortunately this did not make a huge amount of difference and i couldn't pull out the drop from the bottom and top of the picture no matter what I tried.
Also I did hear a static noise when the tube is on standby so I guess it hasn't been serviced or looked at in sometime.
Does anyone offer a service for Crt's on hear I could reach out to? Although all my reading and looking around it's likely some resistors gone on the V-Board due to heat over time or failing Caps. I would think its best to get it checked over serviced and recapped just to be safe.
I don't want to jump in myself and start making things worse so would be good to get someone experienced who can show me the ropes or do it solo, either way it would be good to get this PVM back to its former glory.
Any ideas?