Re: Tempest foldover on right side

Been busy, but I had a chance to make a quick video. I taped off the region
around the bounding box, so I would know where it was. It seems the problem
is about 1/2 inch outside that box on the right side.

http://www.youtube.com/watch?v=2kMXHFCB5Zk

On Wed, Dec 16, 2009 at 7:31 AM, Andrew Welburn <andy@andysarcade.net>wrote:

> Don't always assume that a recently replaced part is 100% good, i would
> still replace the transistor with another one as a way to eliminate that
> possibility.. you just never know :-)
>
> Andrew Welburn
> www.andys-arcade.com
>
> ----- Original Message -----
> *From:* Kevin Moore <talon.k@gmail.com>
> *To:* vectorlist@vectorlist.org
> *Sent:* Wednesday, December 16, 2009 1:18 PM
> *Subject:* Re: VECTOR: Tempest foldover on right side
>
> Well the rom set is V2, good point on the boundary limit. I don't recall
> off hand, but when I get home tonight, I'll tape off the bounding box on the
> screen, and see. Wouldn't think it would be the Deflection trans, as I
> replaced all the Transistors with new when I re-capped, and did the LV
> upgrades. Don't think I have any V3 roms handy, but I'll check and see if
> that makes a difference.
>
> Thanks for the input, gives me a few things to check.
>
> Kevin
>
>
>
> On Wed, Dec 16, 2009 at 2:43 AM, Andrew Welburn <andy@andysarcade.net>wrote:
>
>> If its bothersome, you could try replacing the relevant chassis
>> deflection transistor, i've seen that before. Tempest unfortunately will
>> force the monitor to display vectors way, way outside the visibile screen
>> area, later romsets IIRR have a fix for this. Even if your monitor can
>> produce a full image, certain parts of the game will overdrive the
>> deflection such that the transistors will partially break-down, causing
>> other areas of the screen to show foldover like this.
>>
>> Its not clear if your boundary is inside or outside the real screen limit
>> anyway without a photo. you should set the test mode pattern up to fill your
>> screen then watch it in game, is the foldover inside this box?
>>
>> I'd replace the relevant chassis transistor first with a new one then
>> observe... Changing the romset to a later revision might also help, but this
>> is much more laborious, and is ignoring a weakness in your monitor anyway.
>>
>> Andrew Welburn
>> www.andys-arcade.com
>>
>> ----- Original Message -----
>> *From:* Kevin Moore <talon.k@gmail.com>
>> *To:* vectorlist@vectorlist.org
>> *Sent:* Tuesday, December 15, 2009 6:53 PM
>> *Subject:* VECTOR: Tempest foldover on right side
>>
>> I've noticed that Tempest has a slight foldover when the player finishes a
>> level, and the tube starts coming up. The left side the tube lines go
>> infinity for lack of a better word, but the right side seems to fold over
>> like hitting a wall, and it creates a straight line. Typically I just adjust
>> the picture so that the monitor shroud covers this. Is this normal?
>>
>> Thanks,
>>
>> Kevin
>>
>>
>

---------------------------------------------------------------------------
** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org
** Please direct other questions, comments, or problems to chris@westnet.com
Received on Mon Dec 21 15:41:30 2009