LIne 6 Spider IV 30 Schematic request

[Joe Nanfro]

Hello Jazz P Bass, would you happen to have the schematic for the Spider III 150? Joe

[Jazz P Bass]

Sorry.
That one eludes me also.

[nstar]

Yesterday my Spider IV 30 was set up in smoke. Quickly discovered that main amplifier chip TDA2050 almost melted on one side. The part is now obsolete and has no suggested replacement on the Web site of the manufacturer. It has being gone from the Digikey supplier too. Apparently, this chip is inside many other amplifier models such as Fender and Vox. The first look at the design of the PCB makes me believe that it was so cheap that sooner or later many of them will go dead. Thank you to all who posted the schematic for this model. It saved me a day from tracing the PCB for power regulator and the amp itself. Now I will be designing my own amplifier to replace TDA2050. The power regulator has to be changed too due to bad choice of capacitors to filter the power for TDA2030. Is anybody interested in such "update"?

[Jazz P Bass]

Maybe?
2 x TDA2050 Low-cost 32W Mono Hi-fi Amplifier (two items) - oddWires
Semiconductor: TDA2050 (TDA 2050) - 25W HI-FI AUDIO AMPLIFIER... - US$ Site
IC AMP AUDIO PWR HIFI PENTAWATT5 - TDA2050V [TDA2050V] : Component Company - Global Electronic Components Distributor
Mono Amplifier 1x 35W TDA2050V DE1753 | eBay
2 x TDA2050 32W Mono Hi Fi Amplifier Two Items | eBay
1 x TDA2050 32W Hi Fi Amplifier IC USA Seller Fast Free Shipping | eBay

[nstar]

Thank you! I found many offers from AliExpress. However, I will not be soldering TDA2050 back into the same PCB. It doesn't look save by its design. It is just as easy to make better board and put the chip on normal heatsink isolating it from common ground. There is so much space inside! Nevertheless, if time permits, I would like to use LM3886 in the new design. With Spider IV power supply it will last longer and will run safer. On another subject, when looking through the DSP schematics it looks like the entire design of the board is done in stereo mode. It becomes mono only just before going to the TDA chip. I am not entirely sure about this stereo thing. Will be nice to talk to designer of the DSP Tanks again for links.

[J M Fahey]

FWIW recently I saw a thread about fake EBay TDA2050.
They showed side by side pictures and the fake die was much smaller than the good one, specially the output transistors.

Now chipamp dies can't be made in some middle of the jungle, tin roof facility, so speculation was that "somebody" had a large stash of TDA2030 and was relabelling them.

The fakes worked, of course, just that in the exact same board and PSU used for the test the good one gave 17 or 19W and the fake one gave barely 14W and overheated , so that tends to point to the relabelled 2030 theory.

Consumer beware.

I just can't understand what 2030 is still available and 2050 was discontinued.

If anything, the opposite should be true.

Hope some "second source" manufacturer starts making them ... the good ones I mean.

It costs almost exactly the same to do one or the other, the main cost being the back tinned copper part.

EDIT:


from: http://www.diyaudio.com/forums/chip-...-revealed.html

[peterbayer]

Please , I need, schemematic Line 6 Spider III 120W . i connected in 220W and burned two CI I could not identify .
Thank you !
Peter - BAND VP2

[peterbayer]

Please, I Need Schematic LINE 6 SPIDER III 120W

Please , I need, schemematic Line 6 Spider III 120W . i connected in 220V and burned two CI I could not identify .
Thank you !
Peter - BAND VP2

[Jazz P Bass]

Here is a repost of the Spider 15W.

line6 spider15w.zip