Heathkit oscilloscope?

Hello all,

many thanks for all the responses to my questions.  They are very much 
appreciated, and more importantly, learned, where I had to learn!

An update:  I reflowed the solders on the BNC connectors for both probes, 
and the solders on the AC-GND-DC switches.  I also tried to clean out these 
switches using solvent on a cotton swap.  Both switches are improved, but 
one still exhibits flakiness.  I have new switches on order.  As for the BNC 
connectors, the connector for the dead trace I had turned out to be the 
problem.  Both traces work properly now, with appropriate amplitudes.

Regards,
Dan

"Dan Beck" <biscuitbecks@*nospam*cableone.net> wrote in message 
news:13mjm7lbud7m0af@corp.supernews.com...
> Hello all,
>
> I have been fooling (emphasis on fool) with an old Heathkit 10 MHz two 
> channel oscilloscope, which I believe was built in 1976 (it was given to 
> me several years ago).  I have been able to calibrate the voltage on one 
> channel, but not the other.  Sometimes, after I have spent some time 
> probing old pinball machine circuit boards using the one good channel, the 
> voltage flakes out such that there is minimal amplitude in the waveform, 
> and I can no longer observe good signals from the board in test.
>
> Does anyone here have experience with such a dinosaur?  When the device 
> works it has helped me diagnose these old boards; I am just wondering if 
> there are any tips from the wisemen here in order for me to set this thing 
> up better, recalibrate, etc.
>
> Thank you in advance for reading.
>
> Regards,
> Dan
>
> 

On Sat, 22 Dec 2007 08:22:51 -0700, Dan Beck wrote:

On Sat, 22 Dec 2007 08:22:51 -0700, Dan Beck top-posted:

> many thanks for all the responses to my questions.  They are very much
> appreciated, and more importantly, learned, where I had to learn!
> 
> An update:  I reflowed the solders on the BNC connectors for both
> probes, and the solders on the AC-GND-DC switches.  I also tried to
> clean out these switches using solvent on a cotton swap.  Both switches
> are improved, but one still exhibits flakiness.  I have new switches on
> order.  As for the BNC connectors, the connector for the dead trace I
> had turned out to be the problem.  Both traces work properly now, with
> appropriate amplitudes.
> 

Cool!

But bottom-posting is the convention.

Cheers!
Rich



> 
> "Dan Beck" <biscuitbecks@*nospam*cableone.net> wrote in message
> news:13mjm7lbud7m0af@corp.supernews.com...
>> Hello all,
>>
>> I have been fooling (emphasis on fool) with an old Heathkit 10 MHz two
>> channel oscilloscope, which I believe was built in 1976 (it was given
>> to me several years ago).  I have been able to calibrate the voltage on
>> one channel, but not the other.  Sometimes, after I have spent some
>> time probing old pinball machine circuit boards using the one good
>> channel, the voltage flakes out such that there is minimal amplitude in
>> the waveform, and I can no longer observe good signals from the board
>> in test.
>>
>> Does anyone here have experience with such a dinosaur?  When the device
>> works it has helped me diagnose these old boards; I am just wondering
>> if there are any tips from the wisemen here in order for me to set this
>> thing up better, recalibrate, etc.
>>
>> Thank you in advance for reading.
>>
>> Regards,
>> Dan
>>
>>