Posted: Monday Jan 28th, 2019 09:02 am |
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Joined: | Wednesday Jul 12th, 2006 |
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I have been supplied with an SEM01 along with a new 15VDC switch mode power supply (separate purchases !).
Upon booting up i found it did not work. I received a replacement from CBUS shop that did not work!
Upon closer inspection the SEM pcb has "DC15V" imprinted on the pcb. DC being polarity sensitive it also has "+ve and -ve".
It appears that the output of the transformer was wired the wrong way around on the transformer lead.
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I am assuming that the new switch mode power supply 15V DC output will replace in its entirety the old 14VAC transformer.
Although the new switch mode power supply is ( I believe) backward compatible. The old transformer will NOT then feed the new DC15V pcb ( as it is 14V AC output ).
CAN SOME ONE PLEASE CONFIRM IF THE NEW CPU WILL EVENTUALLY USE THE SAME DC15V CIRCUIT AS THE NEW SEM - IF SO THEN ANY C1 UPGRADE WILL REQUIRE NEW SWITCH MODE POWER SUPPLY TO BE FITTED.
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Posted: Tuesday Jan 29th, 2019 07:06 am |
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2nd Post |
slychiu
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Joined: | Saturday Apr 29th, 2006 |
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Can we have the serial numbers of the SEM01 so that we can investigate?
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Posted: Tuesday Jan 29th, 2019 08:30 am |
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3rd Post |
slychiu
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We are asking Laser to check their Slave stock regarding the connections
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Posted: Tuesday Jan 29th, 2019 08:59 am |
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4th Post |
Swiss-Toni
UCM Pi Users

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I have recently pourchased 2 SEM01 from Laser and are waiting to be installed, These were bought with the cabinets, please let us know asap if their is an issue with these as I am due to install one this week. I will get back to you with serial numbers later if required. The PSU is the standard one in the cabinet 14V 2.5A
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Posted: Tuesday Jan 29th, 2019 09:14 am |
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5th Post |
slychiu
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If the transformer is the old 14V type and not the DC type then it should not be an issue. Please provide serial numbetr to confirj
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