PS-100 Day One Red Plate Tube using cab parallel out method

Stage & Studio Power Station PS-100
1

I utilized the method I found online in a youtube video utilizing parallel out from cab back into AMP IN on PS-100 to allow use of WARM and BRITE toggle switches. It worked until it didn’t. After about 15 minutes the sound sputtered and the left tube turned red hot before I turned the unit off.

I used the Mesa parallel box. SPKR OUT to Mesa box. Mesa box Out 1 to Marshall 4x12 Cab 4/8ohm input (set to Mono). Mesa box Out 2 into AMP IN. SPEAKER switch set to 4ohm, AMPLIFIER to 8 ohm.

Is this method okay to use? Was it improperly done and caused the failure? Is my unit damaged or do tubes need replacing?

2

Hi @UsernameU and welcome back to the forum

What’s your serial number, date of purchase and place of purchase?

I need a bit more clarity on exactly how things were connected when the failure occurred.

3

Hello Fryette Support:

I purchased my second PS-100 in November. the Sapphire Blue Chuck Levin’s Edition (local/near me as well in the DMV vicinity as we call it

  • PS-100 Purchase date: November 24, 2025
  • PS-100 Purchase location: Chuck Levins
  • PS-100 Serial number: PHID244071
  • Link to this forum post

Here is the link to the video that shows the technique I was trying to achieve.

https://youtu.be/8UAHpELWaCk?si=JSu3Z7_tcEXRtjCt

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4

Can you remove my name, address, phone and receipt from the forum post?
I wasn’t aware email reply posted to the forum.

5

Hi @UsernameU, I think you already edited it.

OK, this unit likely has fault tubes.

Please write to support@fryette.com

Subject: PS-100 replacement tubes and fuses

Include this information:

They should send you out replacement tubes and fuses. This might not be fast…

Take a look here for how to open the unit,