Audio Related Topics

Hi ChrisACX, and welcome to thecarversite.com. Glad you found us. I did a google search for the procedure, and most of what I found was some guy using your same name asking that question in a few places. We don't have the service manual for the TGP 401 in our database, and it may not be available anywhere. I did find this procedure for a TGP 3 listed on manualslib.com: -- Press the power button to turn the unit off, or turn it off from the wall for a moment. Press and continue to hold down the front panel Power button and the Tone DOWN button at the same time. The TGR-3 will power on and cycle through the display. Keep holding the buttons down until "Resetting to Factory Defaults" appears in the front panel display When the TGR-3 has been reset, it will shut off. Turn the TGR-3 back on and it will go to the default screen. It has now been reset. -- https://www.manualslib.com/manual/973076/Sunfire-Tgr-3.html?page=54 The procedure may, or may not, be similar for the TGP 401. I hope that helps.

Hi Everyone...first time poster. SUNFIRE TGP-401 AV Pre/Pro...how to do a factory reset? The unit ws workingwhen it first cmae in...but now, no output from any channel.....so, we thought we'd reset it, to start fresh. The Google AI recommendation is wrong/not applicable. I think it's referred to in the menu as factory recall settings...but, you need some sort of 4 digit PIN to reset facotry settings....this unit came in used...so, have no idea what the code is.....or, if there is an admin 4 digit code that can reset the unit. Any simple/stupid cheats to do the same thing? Let me know...thanks. Chris - acX.

Bruce Springsteen Something In The Well

WELCOME!

AC/DC Whiskey on the Rocks

The new RC4136Ns at Mouser are drop in. However using a socket on these chips does not present the problem in the C1. Special care is needed when replacing the op amps in a C1. It's very easy to lift the pads or break traces. As for whether you need to change one or not depends on what the problem is. If you don't have the knowledge and the equipment to assess what's causing the issue then changing the op amp can be a reasonable next step, provided you have good workmanship, but of course there's no guarantee this will solve the problem. 'Popping' is normally caused by a difference in voltage from one circuit to the next. The op amp could have a slight DC offset, there could be a bad solder joint somewhere, the switch itself could be really noisy even after cleaning, etc. If you could see the frequency response of the filter this would make everything so much easier. Because if it's working correctly then a little bit of noise is not a big deal because it's not like you stand there and play with the switch while you're listening to music. The more often you use the switch then the cleaner it will become. They are slide contact switches so they clean themselves the more often they are used. Convenient!

Welcome from VA! Enjoy your stay!

Staind Warm Safe Place

Welcome Brett!

Bob James & Earl Klugh, Two of a Kind (album) on the backyard system. WiiM Ultra, Adcom GTP 500-II, Carver M200t, Niles OS6.3 speakers. My neighbors are listening to it too.

WELCOME @jmcipale!

WELCOME @Brett R! Nice Carver equipment you have there.

Hello Brett R and welcome to thecarversite.com. Glad you found us! Nice collection of amps and pre's. Once you get to Novice status, we'd all like to see some pics in the Members Systems area. We all like pics of stereo and home theater systems.

Thanks for adding me to the group. I am a long time Carver owner. Bought my first Carver in the early 90s, a TFM-25. Since then I have had a HR-752, and currently have a M1.0t, M1.5t, Sunfire Cinema Grand, CT-24, CT-7, and a C5.

Stevie Ray Vaughn & Lonnie Mack If You Have To Know

Deep Purple Hush (1968 LIVE TV)

That’s a good idea. When I have the input board disconnected, it is silent. So that may be a clue. I’ll try it and report back. Thank you!

Doobie Brothers What A Fool Believes

Hello, That's definitely not normal, and not the kind of anomaly the 'thump fix' was designed to correct. One could swap the input board connectors between left and right to see if the problem is in the input section or in the amp stage. I have a suspicion it's the muting circuit in the input board.

Welcome from VA! Enjoy your stay!