PS-2a stopped working

[skrawboy]

Hi there,

My PS-2 stopped working yesterday. I opened it up and found that the fuse was blown. I changed the fuse, but there’s still no sound. I also tried swapping all the tubes, but still no sound.
Any ideas?

Cheers,
Lars

[dan]

Hi Lars,

Do you see any red glow from the heaters inside the tubes – just trying to understand of there is any power at all?

This might sound repetitive, but I’ve lost count of the number of times this checklist has helped people solve their problems. Follow these steps, one by one, I know you have already done some of them. But get them out of the way.

Please do:

1. Won’t turn on
2. No Sound
3. Won’t switch to operate

Power Station: Troubleshooting Guide

WON’T TURN ON Make sure AC cord is securely connected at both ends. Verify the power source with something you know works. Check the mains fuse, and replace if necessary. If it blows again, refer to qualified service personnel. NO SOUND Check input cable. Check volume controls. Make sure the amplifier volume and/or gain controls are turned up. Unplug the FX loop, check for sound. Connect a jumper cable from FX send directly to FX return; check for sound. Connect a jumper cable from Line Out d…

Also Joe’s video on changing tubes and fuses is excellent

If you need to buy new fuses you can find the details here,

What fuses do I need for the Power Station PS-2 and PS-100?

Before replacing tubes or the internal fuse on the Power Station see Joe’s video Internal Fuse [PS Internal Fuse] The PS-2 and PS-100 need different internal fuses! PS-100 250V 2A Fast acting / Fast blow 5mm x 20mm Part Number: Littlefuse 0217002.MXP Note: alternative part numbers are OK: 0217002.HXP, 0217002.VXP or 0217002.TXP PS-2 250V 630mA Fast acting / Fast blow 5mm x 20mm Part number: Littlefuse 0217.630MXP Note: alternative part numbers are OK: 0217.630HXP, 0217.630VXP or 0217.630…

[skrawboy]

Hi Dan

To sum it up:

1. The first thing I did was go through the checklist.
2. The unit powers up fine, and there are green lights and filament glow in both the 6L6 and 12AX7 tubes.
3. I swapped the tubes and tested it with tubes I know are good, but I still get no sound when I flip the operate switch.
4. I checked the voltage at the internal fuse, and it reads 217 volts.

Readings on the 6L6 tubes are as follows:

• Pin 1: 0 V
• Pin 2: 0 V
• Pin 3: 490 V
• Pin 4: 490 V
• Pin 5: –53 V
• Pin 6: 0 V
• Pin 7: 0 V

What do you think?

Regards Lars

[skrawboy]

Hi Dan

No answer, no help??

I unscrewed the circuit board and fixed the loose connection. Now it works.

poor support

[dan]

Hi Lars

Congrats on fixing it, sorry I have been working on other area of the business and not spent as much time on forum as normal this week

Any information on the loose connection? Maybe we should add that to the checklist.