Re: [time-nuts] HP Z3801A Internal Power Supply issues

2016-02-01 Thread paul swed
I had the same thing happen on 1ks24361 Makes a nasty smell On Sunday, January 31, 2016, Adrian Godwin wrote: > A tant melted on one of my KS-246361 boxes (I guess they're a similar age, > possibly even the same source). The only one so far to have trouble. It > failed in such a way that it cont

Re: [time-nuts] HP Z3801A Internal Power Supply issues

2016-01-31 Thread Adrian Godwin
A tant melted on one of my KS-246361 boxes (I guess they're a similar age, possibly even the same source). The only one so far to have trouble. It failed in such a way that it continued to smoke and load up the power supply, The current drawn from the no-name laptop power supply was still well wit

Re: [time-nuts] HP Z3801A Internal Power Supply issues

2016-01-31 Thread Bob Camp
Hi I had one that took out the internal fuse once every 3 to 5 years. After replacing the fuse 3 times, the supply died. Go figure … only 15 years or use. Bob > On Jan 31, 2016, at 9:11 AM, paul swed wrote: > > As I mentioned in the another thread this week. > You can indeed replace the failed

Re: [time-nuts] HP Z3801A Internal Power Supply issues

2016-01-31 Thread paul swed
As I mentioned in the another thread this week. You can indeed replace the failed voltage with just another inverter. Mine has run this way for 10 years. Mine was a 5 by the way. If it was one side of the +/-15 I would say you want to replace both. The entire switcher can be replaced with supplies

Re: [time-nuts] HP Z3801A Internal Power Supply issues

2016-01-30 Thread Alex Pummer
power supply runs for a while, output current increases, but voltage stays correct -> problem is in the load circuit, load circuit working for a while load current increases, but it recovers after pause -> look for some tantalum capacitor in the load circuit, they recover often a few times bef

[time-nuts] HP Z3801A Internal Power Supply issues

2016-01-30 Thread Artek Manuals
My Z3801A began to die over the last few days. It would work for an hour or two then produce a receiver error and communications problems. Turn it off, let it sit awhile, back on and it would start the survey and then begin to recover. Tonight it finally went dead with high current on the main