Re: Tempest repair problems

Be sure to check the size and linear pots for brken legs.
On Jan 3, 2012 6:25 PM, "Rich Harkoff" <rharkoff1@new.rr.com> wrote:

> **
> Thanks Matt good to know about the DAC. That's one of the chips I wanted
> to change since I see posts here & KLOV they fail a lot. My board has the
> 3410 chips and my local coinop guy actually has some. I thought I found the
> problem with that bad C13 but obviously not. I checked the voltages on the
> tls82 and found no AC voltage on pin 7 so that is another area that needs
> to be checked out more.
> Thanks again,
> Rich
>
>
> ----- Original Message -----
> *From:* matt <galaga@slingshot.co.nz>
> *To:* vectorlist@vectorlist.org
> *Sent:* Tuesday, January 03, 2012 5:07 PM
> *Subject:* Re: VECTOR: Tempest repair problems
>
> i had this.. the dac 6012 was dead :(
>
> ----- Original Message -----
> *From:* Kevin Moore <talon.k@gmail.com>
> *To:* vectorlist@vectorlist.org
> *Sent:* Wednesday, January 04, 2012 10:16 AM
> *Subject:* Re: VECTOR: Tempest repair problems
>
> Well your y has no swing. So that's your problem area. Check ac volts on
> the tl082 outputs to start narrowing it down. Also check your -+ 15 volts
> On Jan 3, 2012 3:12 PM, "Rich Harkoff" <rharkoff1@new.rr.com> wrote:
>
>> **
>> Hi Kev,
>> With game in test mode X out has 3.7volts ac, Y out zero volts ac. Don't
>> have a scope nor access to one.
>> Thanks,
>> Rich
>>
>> BTW, OT did you see the tongue-in-cheek article from "The Onion"
>> on Cowboys releasing Jerry Jones?
>> See here
>> http://www.onionsportsnetwork.com/articles/dallas-cowboys-release-jerry-jones,2815/
>>
>> ----- Original Message -----
>> *From:* Kevin Moore <talon.k@gmail.com>
>> *To:* vectorlist@vectorlist.org
>> *Sent:* Tuesday, January 03, 2012 2:19 PM
>> *Subject:* Re: VECTOR: Tempest repair problems
>>
>> What are the AC voltages running on the X and Y output. Do you have a
>> scope to put on the outputs?
>>
>> If you do, have a look at my page showing your wave forms with the
>> diamond pattern in test.
>>
>> http://txvectorarcade.com/tiki-index.php?page=Tempest&no_bl=y
>>
>> Kevin
>>
>>
>> On Tue, Jan 3, 2012 at 1:22 PM, Rich Harkoff <rharkoff1@new.rr.com>wrote:
>>
>>> **
>>>
>>> Hello and Happy New Year,
>>>
>>> Looking for any suggestions on a fix for a spare Tempest boardset. I got
>>> this and several other PCB’s for free from a local Op who was cleaning
>>> house, when I plugged it in my game there was no Y output, found that C13
>>> was bad, replaced that and now I have voltage swings on both X&Y outputs.
>>> Someone replaced all the TLS082 chips and I verified that they are good. So
>>> here is where I'm at, 6100 fully functional, all voltages on PCB correct,
>>> goes into self test, no tones heard except the 4 decending tones, game
>>> plays blind as far as I can tell. Spot killer "on" and when I turned up
>>> brightness momentarily to override it, the screen just showed a small red
>>> dot in the center.
>>> Thanks in advance for any help.
>>>
>>> Rich
>>>
>>> Green Bay
>>>
>>
>>

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Received on Tue Jan 3 20:46:50 2012