Re: Major Havoc

Some of the tin delaminated and caused the short. Was easy to see, but sine
the was color issues I put a scope on the color outputs, and blue was
really screwy. So I checked for shorts between it and other pins that's
when I narrowed it down.
On Jul 4, 2012 7:14 PM, "William Boucher" <wboucher6@cogeco.ca> wrote:

> **
> Well that certainly explains the color and Y errors. Good job. I'm glad
> you got that fixed. What was the nature of the short? A solder bridge or
> some sort of scratch across traces? A bent-over pin?
>
>
> William Boucher
> http://www.biltronix.com
>
> ----- Original Message -----
> *From:* Kevin Moore <talon.k@gmail.com>
> *To:* vectorlist@vectorlist.org
> *Sent:* Wednesday, July 04, 2012 5:04 PM
> *Subject:* RE: VECTOR: Major Havoc
>
> Just an update. There was a shorted trace between blue out and y in.
>
> Kevin
> On Jul 2, 2012 10:16 PM, "Barry Shilmover" <barryshi@microsoft.com> wrote:
>
>> I had one conversion board that had a tiny short between two lines
>> which caused something almost exactly the same…****
>>
>> ****
>>
>> *From:* owner-vectorlist@vectorlist.org [mailto:
>> owner-vectorlist@vectorlist.org] *On Behalf Of *Kevin Moore
>> *Sent:* Monday, July 2, 2012 6:29 PM
>> *To:* vectorlist@vectorlist.org
>> *Subject:* Re: VECTOR: Major Havoc****
>>
>> ****
>>
>> Well it's not mine. I've never even seen or played a MH before. I'm just
>> trying to fix it :) There was a bad +15reg, which I replaced, it's now
>> putting out +-15 The image was worse before doing that. The Opamp and
>> 1495's were replaced. The 6.8v Zener is on the money as well. But yeah
>> there isn't much to it.
>>
>> Time to dig further.
>>
>>
>>
>> ****
>>
>> On Mon, Jul 2, 2012 at 4:44 PM, William Boucher <wboucher6@cogeco.ca>
>> wrote:****
>>
>> The trace cuts and wires at the edge connector appear correct. Obviously
>> from your pictures, the MH board is fine. I wish I could have your
>> converter board in my hands for a few minutes to check it out but so much
>> for wishful thinking. Since some of the geometry is correct but the colors
>> are wrong, the screen is half sized, and there are retrace lines showing,
>> it makes me wonder if your converter has lost one of the 15V regulator
>> outputs. There's not a lot of stuff on those converters, mainly just the
>> two regs, the 1495's, and the op-amp. I wouldn't think that a bad pot
>> could make things that wonky but a shorted cap might. Check for 6.8V
>> across CR5 just for fun.****
>>
>> ****
>>
>> Read the attached file. It describes a requirement to flip the small
>> edge connector harness socket around to make the thing work. Maybe you did
>> that already, maybe not. Now that I'm thinking about this possibility, it
>> makes sense because the RGB and Y signals pass straight through the
>> converter and so they should not be messed up but they are obviously so a
>> reversed connector might explain it.****
>>
>> ****
>>
>> William Boucher
>> http://www.biltronix.com****
>>
>> ----- Original Message ----- ****
>>
>> *From:* Kevin Moore <talon.k@gmail.com> ****
>>
>> *To:* vectorlist@vectorlist.org ****
>>
>> *Sent:* Monday, July 02, 2012 5:10 PM****
>>
>> *Subject:* Re: VECTOR: Major Havoc****
>>
>> ****
>>
>> With adapter
>>
>> https://lh6.googleusercontent.com/-kuSOFoVWSjc/T_INTvUZ7mI/AAAAAAAAFuc/GjXsfribG98/s576/IMG032.jpg
>> ****
>>
>> Without
>>
>> https://lh6.googleusercontent.com/-QK8776ybEzw/T_INOFKDIaI/AAAAAAAAFuU/ApzqCC7f-Tg/s576/IMG033.jpg
>> ****
>>
>> Trace cuts****
>>
>>
>> https://lh4.googleusercontent.com/-dkzXg5kK6Mg/T_INmIXFlmI/AAAAAAAAFuk/i3k3eXZpB3c/s576/IMG036.jpg
>> ****
>>
>> On Jul 2, 2012 2:44 PM, "Kevin Moore" <talon.k@gmail.com> wrote:****
>>
>> Ok. Well I do have two cut traces, on the small edge connector, with two
>> wires running to the DG201's I want to say Pin 7 it's not in front of me
>> atm.
>>
>> The image I'm seeing is more than just a pincushion problem. I'll get a
>> picture in a min.
>>
>> Kevin
>>
>> ****
>>
>> On Mon, Jul 2, 2012 at 2:39 PM, William Boucher <wboucher6@cogeco.ca>
>> wrote:****
>>
>> Four things to note...****
>>
>> ****
>>
>> 1/ The T-to-MH conversion board provides pincushion correction that is
>> needed to make MH look okay on a wg6100. Obviously the corrected output
>> would look wonky on an Amp which requires no such correction.****
>>
>> ****
>>
>> 2/ The mods suggested for the wg6100 are not required to test out the
>> game. Nothing bad will happen if you run the game without those mods.
>> Assuming that the mods we are talking about are the addition of zener
>> diodes across the transistors on the bottom of the deflection board, those
>> were only added as a cheap way to limit the output current in the event
>> that something went wrong with the game. The intent was to prevent major
>> meltdowns of the monitor while the machine was on route and sitting there
>> for many hours or days with a major problem. I have seen several cases
>> where adding the zeners actually caused problems for certain games.****
>>
>> ****
>>
>> 3/ The MH board that you have may need a few small wire jumpers added to
>> it in order to make it into a "conversion" version. Dedicated boards do
>> not feed "pre-X" and "pre-Y" signals to the specific edge fingers as
>> required by the conversion board.****
>>
>> ****
>>
>> 4/ Another difference between dedicated boards and conversion boards is
>> the crystal frequency. There was a slight difference in the frequency
>> introduced to make the apparent speed of the spinner seem more like the
>> original roller controller. The slower clock has other effects as well,
>> such as the pitch of certain sounds. The change may also have been made to
>> slow down the vector drawing rate so that the wg6100 could better keep up.
>> ****
>>
>> ****
>>
>> If you need, I can provide photos of my own conversion board output
>> section so you can see which edge pads to first isolate and then wire to
>> which pins****
>>
>> The crystal frequencies on my board are...****
>>
>> Y1 = 9.216 MHz****
>>
>> Y2 = 8.000 MHz****
>>
>> ****
>>
>> I'm pretty sure that the required changes are all documented in the
>> original Atari conversion docs...****
>>
>> http://www.biltronix.com/Space_Duel_to_Major_Havoc_Conversion_Files.html*
>> ***
>>
>> The above link provides the docs pertaining to the Space Duel conversion
>> but I'm sure that I have the Tempest specific ones if you need them (let me
>> know).****
>>
>> ****
>>
>> ****
>>
>> William Boucher
>> http://www.biltronix.com****
>>
>> ----- Original Message ----- ****
>>
>> *From:* Kevin Moore <talon.k@gmail.com> ****
>>
>> *To:* vectorlist@vectorlist.org ****
>>
>> *Sent:* Monday, July 02, 2012 2:39 PM****
>>
>> *Subject:* VECTOR: Major Havoc****
>>
>> ****
>>
>> Have a question concerning the tempest to mh conversion.
>> Just repaired a mh board, everything looks great on my pat9000 bench.
>> That is until I plug in the conversion board set. The the video goes all
>> sorts of bad. I've checked over the components on the adaptor board and
>> have found no fault. ****
>>
>> Reading over the conversion documents it looks like there is some mods
>> needed to the wg6100 before I go and do those mods I'd like to understand
>> better what they are for. Mind you I'm running an amplifone setup in the
>> pat so I would actually have to convert my tempest to check this thing out.
>> ****
>>
>> Kevin****
>>
>> ****
>>
>> ****
>>
>

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Received on Wed Jul 4 20:48:10 2012