24 Aug
1997
24 Aug
'97
12:59 p.m.
Charles E. Fox wrote:
I am trying to revive a PC Jr. At power on I
get two beeps, no
video
either on the IBM monitor or through the RCA connector. I have tried
removing plug-in boards except for power supply, with same results.
Also tried two different PC Jr keyboards, plugged in, same results.
Does anyone recall what two short beeps indicates on an IBM PC/Jr?
I just checked the PC Jr. Guide to Operations and it was pretty useless as
far as finding the problem. Interesting that you plugged in the keyboards.
The usual keyboard has an IR link with the base unit and doesn't need to be
plugged in. You might try it with the keyboards not plugged in and see what
happens. I have found several keyboards where the battery started to leak
and caused a bit of damage in the battery compartment of the keyboard
itself.
Usual Startup sequence:
1) IBM Color Bar Screen w/ correct memory appears.
2) One Beep from system.
3) IBM Basic Screen Appears
Further on in the troubleshooting section it asks if you heard any beeps:
No - Have the unit serviced.
1 Beep - Go on with the chart.
2 Beeps - Have the unit serviced.