Re: Weird distorted shapes

That might be caused by the z input. The z input controls brightness! On
the o-scope, you see all retrace and it makes it look really strange! Good
luck!

On Mon, Mar 3, 2014 at 10:15 PM, Joel Griffin Dodd <griffindodd@gmail.com>wrote:

> Jimmy,
>
> I tried the boards on a 6100 from my Space Duel, there was very minor
> distortions but nowhere near as bad as this. All my text looks like it's in
> an Asian font lol
> On Mar 3, 2014 8:10 PM, "Joel Griffin Dodd" <griffindodd@gmail.com> wrote:
>
>> I rearranged all of my boards and wiring harness to make sure nothing was
>> to close together but no change. The only other obvious power issue I can
>> see is that I only have 2 prong power outlets in my shed, so I'm not
>> getting a proper ground. Also I have fluorescent strips in the shed running
>> off the same circuit, do you think they would cause an issue?
>> On Mar 3, 2014 8:04 PM, "Joel Griffin Dodd" <griffindodd@gmail.com>
>> wrote:
>>
>>> I have a dual channel scope but I'm very green with it. Should I just be
>>> looking at the XY output the way I would get a picture on the scope or use
>>> it in a different way.
>>> On Mar 3, 2014 6:52 PM, "Jimmy Ipock" <jipock@gmail.com> wrote:
>>>
>>>> A dual channel oscilloscope might be useful here. It would show noise
>>>> in the x and y signals.
>>>> On Mar 3, 2014 8:31 PM, "Joel Griffin Dodd" <griffindodd@gmail.com>
>>>> wrote:
>>>>
>>>>> We've already tried the non inductive resistors but the problem
>>>>> remains. Anything else? Someone mentioned AC leakage into the XY amplifiers
>>>>> although the distorted shapes are stable, they don't flicker.
>>>>> On Mar 3, 2014 4:24 PM, "Andre Huijts" <a.huijts@upcmail.nl> wrote:
>>>>>
>>>>>> Yes, and I got that answer from Jed Margolin, he should know :)
>>>>>>
>>>>>> Verstuurd vanaf mijn iPad
>>>>>>
>>>>>> Op 4 mrt. 2014 om 00:29 heeft Joel Griffin Dodd <
>>>>>> griffindodd@gmail.com> het volgende geschreven:
>>>>>>
>>>>>> 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
>>>>>>>>>
>>>>>>>>> ---------------------------------------------------------------------------
>>>>>>>>> ** Unsubscribe, subscribe, or view the archives at
>>>>>>>>> http://www.vectorlist.org ** Please direct other questions,
>>>>>>>>> comments, or problems to chris@westnet.com
>>>>>>>>
>>>>>>>>
>>>>>>>> ---------------------------------------------------------------------------
>>>>>>>> ** Unsubscribe, subscribe, or view the archives at
>>>>>>>> http://www.vectorlist.org ** Please direct other questions,
>>>>>>>> comments, or problems to chris@westnet.com
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>

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Received on Mon Mar 3 23:17:33 2014