![]() When the signal at pin 6 drops to certain low level the distortion channel is activated. If i understand this right, U6 needs a hi signal to pin 6 to keep the amp in the clean channel. #Gk backline 100 fullIt starts with a very dim,flickering glow and the longer the amp is on the brighter it gets until it is full bright after about 20 minutes. I powered it up this morning and the thing i didn't mention before was the Distortion LED doesn't start coming on until the amp has been on for 9 minutes or so. #Gk backline 100 crackedI did more test on it and i didn't find any cracked solder joints or damaged tracings, torn solder pads. I had to put the GK to the side so i could take care of other amps. the BL 600 is one of the models using it. Set it so the LED is ON, then wiggle the LED. #Gk backline 100 seriesHell, C45 could be trying to short, we could remove it and see if it makesd a difference.īut since the LED is a series element when the IC is activated, what if the LED itself is the problem? It could be intermittent, or its solder cracked. SP that leaves us with possible switch and/or jack somehow intermittantly grounding that point ORRR when it is supposed to be grounding it, it sometimes loses continuity to ground. That then turns on the LED, and also grounds off the control pin of the IC. The footswitch or panel switch grounds the bottom end of the LED. The voltage to the control pin of the gate IC comes THROUGH the LED to get there. I am looking at the schematic, and I see U6 as the switching element, and I see the LED. If the DG chip is what switches signal paths, then what CONTROLS that IC? And what CONTROLS the LEDs? When you get two symtpoms that occur together, like channel switchcing on its own AND LEDs blinking at the same time, don t IGNORE one of them. I haven't checked yet but isn't the !N 4148 a zener? Anyway, the led is still on constantly and could that LED be leakyThanks. D4 was a 1n4148 i replaced it with a 1n914. Before i got the schematics i was shooting in the dark and i replaced U1 TL 072 and also diode D4.I touched up some of the solder joints which are in the switching circuit. There wasn't any dc voltage leaking between the pins that i could see but that doesn't mean the switch is good. Which pin activates the switch? Looking at the schematic i've checked everything in the positive voltage path and everything seems fine. Pins 1,2 6 and 8 seem to be signal carriers. I got the pin out for the DG419 from Alldatasheet and did some voltage checks.Pin 4 is positive 14 volts. I actually have a O612AA chip in that position so i'm guessing either that's an in-house number or a substitution. The schematic shows a DG419DJ analog switch in the U6 position. #Gk backline 100 freeGet More FREE GK Questions for Class 1 Apps (Check it Now)ĥ) How many colours are there in a rainbow?ħ) Name the day that comes after Tuesday?Ĩ) How many vowels are there in the English alphabet?ġ0) Which gas do humans need to breathe to live?ġ2) How many zeroes are there in one thousand?ġ5) Which sense organ do you use to smell?ġ6) Which part of the plant is brown and below the ground?ġ8) Which part of a plant soaks up nutrients and water from the soil?ġ9) Which bird has a far sight and turns its head all the way round?Ģ1) Which animal wags its tail and lives in a kennel?Ģ2) Which animal has a long nose known as trunk?Ģ6) Which animal has black and white stripes on its body?Ģ8) February has _ days in a leap year.Ģ9) Which is the largest river island in Asia?ģ5) Name the largest island in the world?ģ6) Which is the largest mammal on Earth?ģ7) What is the name of the story where Ella leaves her glass slipper while attending the royal ball?ģ8) Which fairy tale character meets seven dwarfs in a cottage?ģ9) Name the fairy tale character with long golden hair trapped in a tower?Ĥ0) Name the fairy tale character, who is a poor thief and has a magic lamp?Ĥ1) Which fairy tale character meets a Big Bad wolf while going to visit her grandmother in the woods?Ĥ2) Name the story in which a young girl falls through a rabbit hole, goes to a fantasy world and meets many strange characters?Ĥ4) Planet Earth is shaped like a _.Ĥ5) A shape with six sides is called _.Ĥ6) A shape with ten sides is called _.ĥ0) In which season do we use cotton clothes?ĥ1) The colour of cow’s milk is _.ĥ3) The tusks of elephants are made of _.ĥ4) Kangaroos have _ to carry their young ones.Ħ2) The leaves of a tree fall during which season?Ħ3) A person who goes to space is called an _.Ħ5) Which colour of the traffic light indicates “wait”?Ħ6) Which is the first letter of the English alphabet?ħ2) Your father’s brother is your _.I realized after the fact there are 2 schematics. So, here are some easy GK questions for kids with answers for Class 1. This can be done by developing General Knowledge in Kids. “ Curiosity is the spark behind the spark of every idea”.Īnd so, let us be someone who ignites the spark in them. ![]()
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