Another IFR 1500 story
Posted: Sat Jan 28, 2017 6:45 pm
Hi there
Got one with eBay with no video ,could buy a refurbished board with KG electronics ($ 300)and all was OK.
I didn't use it regularly and one day she partially quited with some functions still working.
-All power supply voltages are OK
-CRT is bright & clear
-Keyboard is inoperative !
-LCD display is frozen
-2 Analog meters working
-Volume/squelch are OK and also speaker ( can hear WWV on the stuck 10 Mhz and also the tones 1 & 2 on 1000 hz)
-Central commutator works on : "scope"/"analy"/"track" & "sweep" (trace on CRT) but not for "freqs", "tones","meters", "help"
-CR 2325 battery & 2 caps found dead on the CPU_memory pc board ,replaced without improvements.
Downloaded the troubleshooting manual but don't know where to commence my investigations .
If somebody could just show me a path or some points to check, that would be greatly appreciated
Thank you
Patrick FO4MM
Got one with eBay with no video ,could buy a refurbished board with KG electronics ($ 300)and all was OK.
I didn't use it regularly and one day she partially quited with some functions still working.
-All power supply voltages are OK
-CRT is bright & clear
-Keyboard is inoperative !
-LCD display is frozen
-2 Analog meters working
-Volume/squelch are OK and also speaker ( can hear WWV on the stuck 10 Mhz and also the tones 1 & 2 on 1000 hz)
-Central commutator works on : "scope"/"analy"/"track" & "sweep" (trace on CRT) but not for "freqs", "tones","meters", "help"
-CR 2325 battery & 2 caps found dead on the CPU_memory pc board ,replaced without improvements.
Downloaded the troubleshooting manual but don't know where to commence my investigations .
If somebody could just show me a path or some points to check, that would be greatly appreciated
Thank you
Patrick FO4MM