#1
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b&k tube tester model 606 problem
Here is the problem all of a sudden it wont read shorts/gas. The resistors seem to be ok and the what 2 capacitors and it wont indicate anything. The lamp is ok and even if you select the two same numbers like 7 and 7 the lamp should light and it doesn't. Any ideas on what's wrong? The tube inside is the only this I can think of but checked it on a different tester and it reads good emmisions but that's all I can say about the tube. Is there something I overlook. Thank
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#2
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How did you determine that the bulb is good? Did you try it in another unit?
Gregb |
#3
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If R-6 is misadjusted, it will shunt any voltage across the NE-51. It can be adjusted toward 0 ohms, and will negate the lamp in the circuit. If it hasn't been adjusted, look for any debris/tin whisker within the pot.
Do you get the momentary flash when switch C is rotated throught the positions? If not, check the .05uF cap - it discharges momentarily and will cause one element of the neon shorts lamp to flash when switch C is rotated.
__________________
Brian USN RET (Avionics / Cal) CET- Consumer Repair and Avionics ('88) "Capacitor Cosmetologist since '79" When fuses go to work, they quit! |
#4
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It will not flash when c is rotated but it used to. The lamp is good. It only shows a momentary flash if you press the test button. This.05 is it on the meter? The electrolytic was replaced but not the cap on the meter. I only saw two caps inside.
Last edited by kramden66; 11-05-2015 at 08:27 PM. |
#5
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One end of the .05 connects directly to the NE51 Shorts lamp. It's not the cap across the meter terminals - that is a damping capacitor for the meter.
Take a good look at the schematic and compare it to the wiring of the 606 and you'll find the cap easily.
__________________
Brian USN RET (Avionics / Cal) CET- Consumer Repair and Avionics ('88) "Capacitor Cosmetologist since '79" When fuses go to work, they quit! |
Audiokarma |
#6
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I have no schematic but will look for the cap and replace it. Thank
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#7
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The entire manual is available online for FREE at BAMA and other sites. Schematic and theory of operation are in the manual.
__________________
Brian USN RET (Avionics / Cal) CET- Consumer Repair and Avionics ('88) "Capacitor Cosmetologist since '79" When fuses go to work, they quit! |
#8
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I have two books with tube numbers but no owners manual. Replaced the cap and it seems to be working...... i wasnt thinking of that cap because it is a disc. ......... Thanks guys.
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