Introduction
DigiMod 500/1000/1500/2000HV/1000NPS
This technical document has the aim to be a support guide to solve the most recurrent failures
of DigiMod series.
The troubleshooting will help you to characterize the kind of the fault.
For each failure solving it is explained the recovery method, and it is shown the related
assembly outline particular. The components to be replaced are evidences in red, while the
ones that need to be checked in yellow.
At the end of this guide there is a list showing the description and the related internal
Powersoft code of the parts used in DigiMod series models.
Introduction ____________________________________________________________________ 2
Troubleshooting ________________________________________________________________ 3
Removal of the main PCB_________________________________________________________ 5
Assembly outlines_______________________________________________________________ 8
Replacement of the Control Board (CB) ____________________________________________ 11
Check of the Mosfets short circuit ________________________________________________ 12
Failure of the NTC R10 __________________________________________________________ 14
Failure of the IC U1 _____________________________________________________________ 15
Failure of the varistor RV1 _______________________________________________________ 16
Failure of the IGBTs ____________________________________________________________ 17
Failure of the CH1 output Mosfets_________________________________________________ 18
Failure of the CH2 output Mosfets_________________________________________________ 18
Failure of the resistor R73 _______________________________________________________ 19
Failure of the resistor R79 _______________________________________________________ 19
Failure of the capacitors C51, C52, C53 and\or C54 __________________________________ 20
Failure of the resistor R22 _______________________________________________________ 21
Failure of the resistor R23 _______________________________________________________ 21
Spare Parts List ________________________________________________________________ 22
WE RECOMMEND THAT THE SERVICE OPERATIONS ARE DONE BY A TECHNICIAN.IN
THE CORRECT WAY DESCRIBED IN THIS GUIDE.
CAUTION
RISK OF ELECTRIC SHOCK
!
Powersoft S.r.l. P.I.04644200489 Via Conti 5, 50018 Scandicci (FI) Tel. 055 7350230 Fax 055 7356235 Web:
www.powersoft-audio.com
Email: [email protected]
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