Amp wont power up. Heres what i have on the 494
1:0
2:0.05
3:0.05
4:0.03
5:0.03
6:0
7:0.03
8:1.59
9:0
10:0
11:1.59
12:1.59
13:0.82
14:0.82
15:0.82
16:0
Any ideas on where to begin?
1:0
2:0.05
3:0.05
4:0.03
5:0.03
6:0
7:0.03
8:1.59
9:0
10:0
11:1.59
12:1.59
13:0.82
14:0.82
15:0.82
16:0
Any ideas on where to begin?
Ok im going by top pin as leg1.
On the first transistor i have
1:0
2:0.72
3:0
Second transistor
1:0.72
2:0
3:0
On the first transistor i have
1:0
2:0.72
3:0
Second transistor
1:0.72
2:0
3:0
Q1
Collector:0.72
Base:0
Emitter:0
Q2
Collector:0
Base:0.72
Emitter:0
Q3:
Base:1.59
Collector:1.59
Emitter:13.94
Collector:0.72
Base:0
Emitter:0
Q2
Collector:0
Base:0.72
Emitter:0
Q3:
Base:1.59
Collector:1.59
Emitter:13.94
Need help too.
I've been online now looking for ways to fix my amp aswell for a few hours. I finally found this site and everything in your signature helped tons.
My power wire came loose from the crimp to my cap from my subs and fell to a rest on the amplifier. Anyways, every single one of my transistors reads OL on my meter when I test them besides 2, following the tests in your signature exactly. And one of those 2 "good" ones reads OL when its on 1+3. The little tiny transistors that are pointed out next to Q3 in that picture are also all reading OL. My REAL question is... Where can I get these, and could you possibly post me a list of transistors and how many I will need? Thanks.
I've been online now looking for ways to fix my amp aswell for a few hours. I finally found this site and everything in your signature helped tons.
My power wire came loose from the crimp to my cap from my subs and fell to a rest on the amplifier. Anyways, every single one of my transistors reads OL on my meter when I test them besides 2, following the tests in your signature exactly. And one of those 2 "good" ones reads OL when its on 1+3. The little tiny transistors that are pointed out next to Q3 in that picture are also all reading OL. My REAL question is... Where can I get these, and could you possibly post me a list of transistors and how many I will need? Thanks.
I can't find the replacement transistors. Could you refer me to a site or maybe a store that I could get them at? or any ones that would possibly work? and also, I'm not new to electronics, but this is my first attempt at fixing an a amplifier. Read almost all of your basics. You are awesome.
I'm at school right now, but every transistor that was attached to the heat sinks were completely fried. I dont remember the numbers and letters exactly, but on the board they were 12-21(or so?) and i believe 187-200ish? Aswell as the 2 tiny transistors that are to the left of the Q3 in the picture, totally toasted.. Anyways, I can not find any replacement parts and was wondering as to where or how I could obtain them.😕
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