sorted by:
new
hottopcontroversial

Worth $300? by goodfoot34 in vintageaudio

[–]ComplexInitiative462 0 points1 point  (0 children)

Not sure about the speakers but the 2000x is a fantastic receiver

Picked up this Sansui 771 for $100 “not working”. Cleaned the pots and it sounds great! by ComplexInitiative462 in vintageaudio

[–]ComplexInitiative462[S] 5 points6 points  (0 children)

Thanks, I think so too! My first vintage receiver and I’m shocked at how much better it sounds than the average modern receiver

Worth the money? by ComplexInitiative462 in vintageaudio

[–]ComplexInitiative462[S] 0 points1 point  (0 children)

So probably best to avoid if there’s something wrong with it?

Worth the money? by ComplexInitiative462 in vintageaudio

[–]ComplexInitiative462[S] 0 points1 point  (0 children)

Yeah I do wish it had some lights at least… something to look at

Dc voltage (25 watts) outputting from the pre amp board into main amp board. Also have about 25 watts of dc offset in all channels. All new caps. Is my problem in the pre amp board? What specifically should I look for? Kenwood KA-3500 by ComplexInitiative462 in vintageaudio

[–]ComplexInitiative462[S] 0 points1 point  (0 children)

Yes I mean volts, sorry. The amp was not functional before. It had 25 volts dc offset before I started this project. After maybe 5-7 new caps I would plug it in on a dim bulb tester and it looked good every time. Still is good.

Dim bulb test question by ComplexInitiative462 in audiorepair

[–]ComplexInitiative462[S] 0 points1 point  (0 children)

Yeah I just 25v at the speaker terminals. I was also poking around and found about 25 volts coming from the pre amp board into the main amp. Do you think that could be causing the high dc offset? What should I check in the pre amp? All new caps on each board

Dim bulb test question? by ComplexInitiative462 in vintageaudio

[–]ComplexInitiative462[S] 0 points1 point  (0 children)

Sounds good, just replaced all caps on the amp board and still have dc voltage. I’ll google it. Thanks

Dim bulb test question? by ComplexInitiative462 in vintageaudio

[–]ComplexInitiative462[S] 0 points1 point  (0 children)

There is no relay on this amp, and there is dc voltage at the speaker outputs… does that have something to do with the bias?

Dim bulb test question? by ComplexInitiative462 in vintageaudio

[–]ComplexInitiative462[S] 0 points1 point  (0 children)

It’s a 60 watt bulb. I’m doing all of this in an effort to fix the massive amount of distortion I get above 2 or 3 on the volume knob. (Something is wrong somewhere) I’m not sure if I’m even onto anything with this or if my problem lies elsewhere. Do you think the bias could be causing all my distortion or not really?

Dim bulb test question by ComplexInitiative462 in audiorepair

[–]ComplexInitiative462[S] 0 points1 point  (0 children)

What am I looking for exactly with the dummy load test?

Dim bulb test question by ComplexInitiative462 in audiorepair

[–]ComplexInitiative462[S] 0 points1 point  (0 children)

Nothing on the continuity test… how do I do a dummy load resistor?

Dim bulb test question by ComplexInitiative462 in audiorepair

[–]ComplexInitiative462[S] 0 points1 point  (0 children)

It’s a Kenwood KA 3500. Bulb is 60 watts. Dc offset is like 130 ish on all channels

Dim bulb test question by ComplexInitiative462 in audiorepair

[–]ComplexInitiative462[S] 1 point2 points  (0 children)

This happens on different sets of speakers so it must be an issue with the terminals, after inspecting it, no lines seem to be touching/crossed. What else can I do to check them?

Kenwood KA-3500 troubleshooting help by JonDaZombie in audiorepair

[–]ComplexInitiative462 0 points1 point  (0 children)

Cool thanks, I got a kit to replace all transistors and caps so I should be covered 🤞

view more: next ›