Forte model 40 phono stage fault

cc1961 · 18th November 2009, 07:50 AM

Hello folks,
i am new to this diyaudio, forgive me if this is not the correct procedure,
currently i am trying to find a fault in my Forte model 40 phono stage it plays
for a while then powers off for a few seconds then comes back on.
have looked for dry solder joints etc, anyone come across this type of fault before.

regards,
Craig

Nelson Pass · 18th November 2009, 09:35 PM

Sounds like a supply fault. I would monitor the DC
rail voltages on the supply - as I recall, if the rails fall too
low, the relays open.

cc1961 · 18th November 2009, 10:07 PM

Thank you, i will check voltages, the main relay is not opening when phono stage cuts out. I would really be gratefull if you could supply copy of manual or circuit diagram.

regards,
Craig

18th November 2009, 07:50 AM	#1
cc1961 diyAudio Member Join Date: Nov 2009 Location: Victoria.	Forte model 40 phono stage fault Hello folks, i am new to this diyaudio, forgive me if this is not the correct procedure, currently i am trying to find a fault in my Forte model 40 phono stage it plays for a while then powers off for a few seconds then comes back on. have looked for dry solder joints etc, anyone come across this type of fault before. regards, Craig

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18th November 2009, 09:35 PM	#2
Nelson Pass The one and only Join Date: Mar 2001	Sounds like a supply fault. I would monitor the DC rail voltages on the supply - as I recall, if the rails fall too low, the relays open.

18th November 2009, 10:07 PM	#3
cc1961 diyAudio Member Join Date: Nov 2009 Location: Victoria.	Thank you, i will check voltages, the main relay is not opening when phono stage cuts out. I would really be gratefull if you could supply copy of manual or circuit diagram. regards, Craig

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