Home |
Search |
Today's Posts |
|
Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to sci.electronics.repair
|
|||
|
|||
Weir HSS100 PSU
I have a strange problem with aWeir HSS 100 power supply. If its left off
for maybe 10-15 mins it fires up ok, but switch it off and back on after a few seconds or minutes, it doesn't start. Checked all the electrolytics etc, etc, off load/on load, no joy. Anyone else had this type of fault, or better still, anyone got a schematic ? Willing to pay. Thanks in advance Iain -- http://www.wilkie-electronics.co.uk Wilkie Electronics 16, Muirhall Terrace Perth PH2 7ES Scotland United Kingdom Tel/Fax +44 (0)1738 621492 |
#2
Posted to sci.electronics.repair
|
|||
|
|||
Weir HSS100 PSU
In message , Iain
Wilkie writes I have a strange problem with aWeir HSS 100 power supply. If its left off for maybe 10-15 mins it fires up ok, but switch it off and back on after a few seconds or minutes, it doesn't start. Checked all the electrolytics etc, etc, off load/on load, no joy. Anyone else had this type of fault, or better still, anyone got a schematic ? Try discharging the main filter capacitor(s) with a high wattage low value resistor (obviously with power removed) and see if it will restart quicker, if it does you've got a capacitor bad, check the start-up circuit for nasty little 47uF (or thereabouts) capacitors and associated high value resistors (100k-470k) Willing to pay. Thanks in advance Iain -- Clint Sharp |
#3
Posted to sci.electronics.repair
|
|||
|
|||
Weir HSS100 PSU
It sounds like there is a thermo sensitive component. Get some freeze spray
and a heat gun. You will have to use the process of heating and cooling the components in sequence to the power cycling to find the faulty component(s). Most likely it is a bad cap. -- JANA _____ "Clint Sharp" wrote in message news In message , Iain Wilkie writes I have a strange problem with aWeir HSS 100 power supply. If its left off for maybe 10-15 mins it fires up ok, but switch it off and back on after a few seconds or minutes, it doesn't start. Checked all the electrolytics etc, etc, off load/on load, no joy. Anyone else had this type of fault, or better still, anyone got a schematic ? Try discharging the main filter capacitor(s) with a high wattage low value resistor (obviously with power removed) and see if it will restart quicker, if it does you've got a capacitor bad, check the start-up circuit for nasty little 47uF (or thereabouts) capacitors and associated high value resistors (100k-470k) Willing to pay. Thanks in advance Iain -- Clint Sharp |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|