[Premium-Rx] Dead W-J HF-1000

[Glenn Little WB4UIV]

Make a table for the connector that was miskeyed. On that table indicate 
the correct labels for the board pins and adjacent to that indicate what 
was applied to the board. Now you can see what was misapplied. Look at the 
devices that had negative voltage applied when they should have had 
positive voltage, look at voltage lines that were grounded, and the like. 
If you are lucky, a choke is burned up. There may be a trace fused open, or 
a bad case, voltage misapplied to an LSI chip. In the case of the chip, the 
chip is probably dead. With you symptoms, it could be a missing voltage to 
an LSI or a dead LSI.

I wish you luck. This happened to me once where I misregestered a plug in a 
laser printer. When I connected the laptop computer to the printer, I 
killed the interface chip for the printer port which also killed the 
keyboard. I had to beg a chip out of GRID to do the repair.

73
Glenn
WB4UIV

At 06:38 PM 09/08/07, John Reed wrote:
>A couple of days ago, I was given a "fixer-upper", a W-J HF-1000, by a 
>good friend.  By accident he had plugged one of the multi-pin cables into 
>the logic mother board with its connector shifted one pin off.  Bad 
>accident!  Now the receiver is completely dead.  No lights, no sound, 
>nothing.  I checked the power supply and it is working ok. It looks like 
>the start-up software isn't being loaded. I have the manual but it doesn't 
>offer any help.  Any suggestions would be appreciated.
>
>John Reed
>_______________________________________________
>Premium-Rx Mailing List
>To Post: premium-rx at mailman.qth.net
>For Info: http://mailman.qth.net/mailman/listinfo/premium-rx
>Visit the Website: http://www.premium-rx.org
>Email Help: paul at premium-rx.org