[Boatanchors] TR-7 Digital Display Is Intermittent ???

[Glenn Little WB4UIV]

When the display goes out, is there still power to the display??

73
Glenn
WB4UIV

At 06:29 PM 06/24/07, w0ng at comcast.net wrote:
>As a long time ham but first-time owner of a TR-7 (and new to this
>list) I'm hoping one of you veteran TR-7 folks might be able to tell me
>why my otherwise fine working TR-7 (built in Feb 1980) looses it's DR-7
>digital display after the rig is on for an hour or so. When the digital
>display goes out, the rig is otherwise not affected. Everything else
>works fine just no digital display.
>
>Turning off the power to the rig and turning it back on does not
>restore the digital display. There is no obvious pattern as to when it
>goes out. Sometimes at power up it is out and other times after the rig
>is warmed-up is goes out. No smoke, no weird sounds, no loose
>connections, no outward signs of any kind that it is going out.
>
>Any help someone could offer would be greatly appreciated. I don't yet
>have the skills to troubleshoot the DR-7 board (or any of the digital
>circuits) yet. I'm hoping it is a simple fix one of you has used
>before. Thanks in advance. 73, Bill, w0ng
>_______________________________________________
>Boatanchors mailing list
>Boatanchors at mailman.qth.net
>http://mailman.qth.net/mailman/listinfo/boatanchors
>** List Administrator - Duane Fischer, W8DBF/W9WZE **
>** For Assistance: dfischer at usol.com **
>$$ For vintage radio info, see the HCI web site $$
>http://www.w9wze.org