Help diagnosing boot issue SWTPC 6800
William Sudbrink
wh.sudbrink at verizon.net
Mon Jan 1 18:13:36 CST 2018
Unless your storage is very dry and clean, I'm afraid you will find that the problem returns if you don't protect those pins/sockets with some sort of electrical grease.
-----Original Message-----
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Nick Allen via cctalk
Sent: Monday, January 01, 2018 6:34 PM
To: cctalk at classiccmp.org
Subject: Re: Help diagnosing boot issue SWTPC 6800
cleaning the connector pins with a brass brush solved the issue, thanks everyone!!
On 1/1/2018 5:03 PM, Nick Allen wrote:
> Thanks for the tips everyone! I can confirm power is GOOD, and the
> problem persists even without the RAM installed (Just CPU and MP-C or
> MP-S board). I am going to clean the buss connectors and see if it
> helps!
>
> On 1/1/2018 12:32 PM, Nick Allen wrote:
>> Hey everyone, Happy New Years! I am thankful for an active community
>> that enjoys helping each other learn, and today I am coming with an
>> ask for help.
>>
>> I have a SWTPC 6800 and ADM3A terminal, I can get it to boot, and
>> when it boots it will continue to boot for several hours. But getting
>> it to successfully boot takes upwards of 100 power OFF and ON
>> cycles. The other 99 times, I get a continuous stream of random
>> ASCII characters (see video link below). It's my first time seeing
>> this type of issue that happens intermittently, and wondering if
>> anyone has any insights in what might be causing this. I suspect its
>> a faulty IC on the Processor board that resets or controls the OS
>> reset, will need to deep dive and diagnose, but thought I would ask
>> for some direction first.
>>
>> https://www.youtube.com/watch?v=Ci4vhPn-3PE
>>
>> Thanks in advance!
>>
>> -Nick
>>
>>
>>
>>
>
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