UMKC – 2H Signal

Bydonfrank

Customer reported no 2H signal during find lock function or gradient shimming. Other issues, AMT had bad fan and the console main switch

  • would not stay on.
  • Replaced fans in AMT
  • Replaced main power switch
  • Tested system RF

When testing RF found that output of AMT had good power out for H1 but the RF power out for H2 and C13 has low. AMT should provide about

60 dB of gain and we found 8 dB of gain. This resulted in inadequate power out to get usable pulses for H2 or C13.

Also noted that the good H1 signal had 120 Hz ripple modulated on it. The 120 Hz source was traced to the PTS 500.

Recommend the Following:

  • Send AMT to our repair depot for refurbishment. This service will provide a full rebuild of the AMT and comes with 1 one year warranty. Lead time about 4 weeks
  • Send in PTS for repair by OEM. If available, this will be the least expansive route. If the repair cannot be done, we have spare PTS 500’s in stock.

We will reach out to PTS and request for quotes. Once we have all of the quotes, I will prepare an estimate and send it.

PTS output with 120 Hz modulation.

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