[GreenKeys] What an Idiot!

[Robert Jarratt]

How did I manage it? That’s the double idiot bit.

 

When I got the machine the transformer had no leads. Because I wanted an easy life I fitted a UK socket to the transformer output and a UK plug to the TTY power lead. That will teach me. I am now on the lookout for US plugs and sockets here in the UK so I can’t make the same mistake again, not that I am likely to after this experience.

 

Regards

 

Rob

 

From: greenkeys-bounces at mailman.qth.net [mailto:greenkeys-bounces at mailman.qth.net] On Behalf Of Teletypeparts
Sent: 26 May 2013 18:45
To: info at drukknop.nl; greenkeys at mailman.qth.net
Subject: Re: [GreenKeys] What an Idiot!

 

Rob,

 

Check the 3 fuses in the UCC-6 first.  They are on top of the UCC-6 toward the back.  Hopefully one is blown.  

 

After that, could be anything.  The SMD card, the power transistor mentioned by Simon, the large transformer under the fuses, burned wires.  

 

Look for the easy fix before you dig too deep.  

 

How did you manage to plug a 120 VAC style end into the 220 UK?  I thought they were very different in style.  

 

 

Wayne




 

-----Original Message-----
From: Simon Claessen <info at drukknop.nl>
To: greenkeys <greenkeys at mailman.qth.net>
Sent: Sun, May 26, 2013 1:26 pm
Subject: Re: [GreenKeys] What an Idiot!

probably the switching transistor. the thing on the big cooling metal. 
also the connected pcb might contain some blown transistors as well. 
fortunate the documentation is readily downloadable but extensive. You 
may want to look at doc 574-100-103TC page 20 for a schematic. also 
check the power supplies and measure the coil resistance. if it is 
infinite, the coil sould be replaced as well as the transistors.
 
good luck!
 
On 25-05-13 20:50, Robert Jarratt wrote:
> I mistakenly plugged my ASR33 directly into the UK mains (240V/50Hz)
> rather than via the 110V transformer. It blew two fuses in the plug
> before I realised what I had done wrong.
> 
> The machine now runs open (i.e. “chatters”) even in LOCAL mode.
> 
> What might I have damaged?
> 
> Regards
> 
> Rob
> 
> 
> 
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-- 
Met vriendelijke Groet,
 
Simon Claessen
drukknop.nl
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