Change all those little tear drop bypass caps connected to the shorted line.
Won't hurt to replace them all, might save a future short. Ken

Henry Kolesnik wrote:

Sometime ago I think I recall someone posted or wrote an article on a neat
way to isolate a shorted component on a pcb using common test eqpt but I
can't recall the methodology. I'm trying to find a shorted component on a
Wavetek 188-S-1257 signal generator. The B+ line reads about 0.4 ohms and
I'm not having much luck disconnecting componets. I don't have a schematic
and my eyes ain't what they used to be for tracing and I want to minimize
the unsoldering. Does anyone recall the article or have a good way?
tnx
hank wd5jfr

Right now it looks like 2 might be the problem marked AVX 103 and AVX 849.
I'm guessing that they're tantalums but not sure. The Wavetake was mfg in
1989. I need help on the values and voltages. There's too many to just
start changing.
tnx
hank
"kenneth l wright" wrote in message
...
Change all those little tear drop bypass caps connected to the shorted
line.
Won't hurt to replace them all, might save a future short. Ken

Henry Kolesnik wrote:

Sometime ago I think I recall someone posted or wrote an article on a
neat
way to isolate a shorted component on a pcb using common test eqpt but I
can't recall the methodology. I'm trying to find a shorted component on
a
Wavetek 188-S-1257 signal generator. The B+ line reads about 0.4 ohms
and
I'm not having much luck disconnecting componets. I don't have a
schematic
and my eyes ain't what they used to be for tracing and I want to
minimize
the unsoldering. Does anyone recall the article or have a good way?
tnx
hank wd5jfr

Just change the ones across the B+ line, shouldn't be that many. Ken

Henry Kolesnik wrote:

Right now it looks like 2 might be the problem marked AVX 103 and AVX 849.
I'm guessing that they're tantalums but not sure. The Wavetake was mfg in
1989. I need help on the values and voltages. There's too many to just
start changing.
tnx
hank
"kenneth l wright" wrote in message
...
Change all those little tear drop bypass caps connected to the shorted
line.
Won't hurt to replace them all, might save a future short. Ken

Henry Kolesnik wrote:

Sometime ago I think I recall someone posted or wrote an article on a
neat
way to isolate a shorted component on a pcb using common test eqpt but I
can't recall the methodology. I'm trying to find a shorted component on
a
Wavetek 188-S-1257 signal generator. The B+ line reads about 0.4 ohms
and
I'm not having much luck disconnecting componets. I don't have a
schematic
and my eyes ain't what they used to be for tracing and I want to
minimize
the unsoldering. Does anyone recall the article or have a good way?
tnx
hank wd5jfr

"Henry Kolesnik" wrote in message
...
Right now it looks like 2 might be the problem marked AVX 103 and AVX 849.
I'm guessing that they're tantalums but not sure. The Wavetake was mfg in
1989. I need help on the values and voltages. There's too many to just
start changing.
tnx
hank


The tantalums in WaveTeks were the weak links. I was continually chasing
shorted tantalum bypasses when I owned two WaveTek 3000 signal
generators.

Pete

On Thu, 15 Jan 2004 16:54:48 -0500, kenneth l wright
put finger to keyboard and composed:

Change all those little tear drop bypass caps connected to the shorted line.
Won't hurt to replace them all, might save a future short. Ken

I agree. I saw a *lot* of shorted tantalums when I was troubleshooting
multilayer minicomputer PCBs during the 80s.

Henry Kolesnik wrote:

Sometime ago I think I recall someone posted or wrote an article on a neat
way to isolate a shorted component on a pcb using common test eqpt but I
can't recall the methodology. I'm trying to find a shorted component on a
Wavetek 188-S-1257 signal generator. The B+ line reads about 0.4 ohms and
I'm not having much luck disconnecting componets. I don't have a schematic
and my eyes ain't what they used to be for tracing and I want to minimize
the unsoldering. Does anyone recall the article or have a good way?
tnx
hank wd5jfr


- Franc Zabkar
--
Please remove one 's' from my address when replying by email.