Re: Weird distorted shapes

Also, not sure if it is related or not, but when the screen is 'full' with
objects, like the high score table I get a noticeable 'flicker' to the
whole screen, like it is struggling to update, the flickering is about 10
cycles per second (by eye) is this normal for Star Wars?

On Mon, Mar 3, 2014 at 3:26 PM, Mendel Pearl <mypearl@dds.nl> wrote:

> Some AC on your DC rails should not matter for the output amp anyway.
>
>
> On 4-3-2014 00:25, Joel Griffin Dodd wrote:way
>
> OK I can try moving things around a little tonight and see what effect
> that has.
>
>
> On Mon, Mar 3, 2014 at 3:21 PM, teeray <teeray@earthlink.net> wrote:
>
>> use a scope to check the amp power supplies for AC ripple
>> and make sure all of the high voltage wires are as far away from the board
>> as possible. Also make sure the X and Y input wires are away from any
>> high voltage.
>>
>>
>>
>>
>> -----Original Message-----
>> From: Joel Griffin Dodd
>> Sent: Mar 3, 2014 6:13 PM
>> To: vectorlist@vectorlist.org
>> Subject: Re: VECTOR: Weird distorted shapes
>>
>> How would I check for that Tim?
>>
>>
>> On Mon, Mar 3, 2014 at 3:11 PM, teeray <teeray@earthlink.net> wrote:
>>
>>> Looks like you have some AC voltage getting into the X and Y amps.
>>>
>>> Tim
>>>
>>>
>>> -----Original Message-----
>>> From: Joel Griffin Dodd
>>> Sent: Mar 3, 2014 2:19 PM
>>> To: vectorlist@vectorlist.org
>>> Subject: VECTOR: Weird distorted shapes
>>>
>>> Hi all,
>>>
>>> Doug and I have been working on building a reproduction 25" Amplifone
>>> using a new deflection board design from an Australian designer (Dez).
>>> Overall it's working extremely well, but we are seeing some odd distortion
>>> in shapes. It's most apparent in circles, but can been seen in most shapes
>>> on the screen where letters look a little warped and joins between vectors
>>> overlap.
>>>
>>> I know even 6100 deflection boards do have a little of this, but it
>>> seems to be more apparent on our board.
>>>
>>> Here's an extreme example of the death star on the star wars start
>>> game menu...
>>>
>>> https://www.dropbox.com/s/i1r76l4dif9vv2w/2014-03-02%2020.10.19.jpg
>>>
>>> Doug mentioned that he thought it may be down to the tolerances of
>>> some of the new components we are using on the deflection board. I wanted
>>> to throw it out to the group to see if anyone has any ideas of where we
>>> might look in the circuit to investigate this odd issue.
>>>
>>> Joel
>>>
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>>
>>
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>
>
>

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Received on Mon Mar 3 18:29:40 2014