Second PS-100 blew up

Stage & Studio Power Station PS-100
1

What is it with these units? My first unit let out a screaming noise then smoke and blew the internal fuse.

I sent it back to Thomann and got a replacement, same thing, it worked for a bit then the same exact thing, internal fuse is blown.

The forum has one of these posts every few days, what is going on???

2

So I sent the device to a tech because I am to frustrated to go through a 2 month exchange process again.

He found that the playe voltage was set to around 700V, this was causing the low quality 6550s Fryette is installing to go into thermal runaway, even though 6550s can handle around 800V, these apparently can’t handle the 709V they are biased for.

When reducing the gird voltage to -38V, the tubes work again and the fuse doesn’t blow.

@Gil @dan @Team_Fryette can you send me replacement tubes, the unit is less than 2 months old

Thank you

3

@DavidPhelge anything?

4

Hey @Cyphers

Thanks for the useful info. The shop has been working 12 hour days, seven days a week for three weeks, so they might not reply fast. Just a note to say your message has been read.

Regards

Dan

5

Hi @dan thank you for your response.

I understand the team is overwhelmed and busy, and I thank you very much for the acknowledgement.

I hope you understand how frustrating of an experience it is to go through the same issue twice after purchasing a $1300 device and seeing many people going through the same thing without hearing anything back from the manufacturer who is obviously at fault here.

Looking forward to hearing back from the team.

6

Hello, We sincerely apologize for all of the hassle and inconvenience you’ve experienced with your PS-100.
We do test our tubes rigorously and we are using the best new production tubes that we can obtain in quantity. That being said, there are some of these tubes that have failed in the field. Please send an email to support@fryette.com to include your shipping address, phone number and the serial number. I understand this info may be redundant but I want to expedite the tubes and fuses to you. Thanks! Gil

7

Hi Gil,

Thank you for your response, I just got the unit back from the tech, I’ll drop you an email with those details.

Thank you!!

Edit: email sent, ignore the first email, I sent it by accident while attaching the image of the serial

8

I’ve had the exact same issue. Two ps100’s ordered from thomann, both blew internal fuses and a power tube within an hour…

Do I need to open a new topic for support in my case or is this post sufficient?

Thank you

9

Hi Michael,

Here is fine and we apologize for this awful experience. As Gil says,

Please follow these steps to get new tubes and fuses sent out to you: How can I make a replacement part request?

Regards,

Dan

10

@Gil have you received my email? I sent it a week ago and have only received the auto reply

11

Yes, we received your email. Thanks!

12

Hi Dan,

I just sent the parts request. My question would be what if this happens a third time…

Thank you for your support.

Michael

13

Hi Michael,

I think we are on top of things now in terms of reliability. To my knowledge non of the replacement parts we have been sending out have failed. If you do encounter any issue we are here!

Regards

Dan

14

Just throwing this out there. From the specifications I have read about 6550 tubes is that most brands are rated between 600-680 volts max on the plates. The only 6550 tubes I know that have a max plate voltage of 800 volts are the Sovtek 6550 and the EHX 6550. The Sovtek’s are basically KT-88’s in a 6550 glass envelope. While the EHX look like KT-88’s

15

Dan, I got my replacement about a month or so ago and on the 2nd use after 30 minutes it has fried again. I made a new topic and have emailed my rep at Vintage King. This is kind’ve frustrating for a $1300 piece of equipment and they fail after minutes of use.

16

Hi @mmcgahey88

Really sorry this happened! Fryette has been working with the tube supplier; we had a batch of tubes that defeated the QA process and would then fail in the field. Because it was a batch problem, the replacement unit had the same issue. The way forward here is for us to send to you directly a new pair of tubes and fuses. I agree this is really frustrating; the best thing we can do is ship those replacements out to you as soon as possible.

To start that process, follow these instructions: How can I make a replacement part request? request complementary tubes and fuses at and link to this thread. The shipping will be free also.

Regards,

Dan