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Actually we have offices in Mumbai, and also in other cities. But we operate all other branches only during summer vacations.
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Contact Details
Vidyasagar Academy Main Office
7X68+W4R, Grand Square Rd, Sai Nagar, Anand Nagar, Thane West, Thane, Maharashtra 400615
Pune Branch
FRP7+5H Pune, 20/1/77, Hirkani Colony, Audumbar Colony, Varkhade, Karve Nagar, Pune, Maharashtra 411052
Nagpur Branch
42X2+QG Nagpur, Royal Plaza, Hingna Road, Wadi, Nagpur, Maharashtra 440016
Amravati Branch
WPCM+QJ Amravati, Maharashtra 444 602
Akola Branch
P258+5J Akola, Ranpise Nagar, Akola, Maharashtra 444001

Dr Vidyasagar Ji thank for replying
In my case Ragini digital tanpura having soft touch button to increase and decrease the volume and for power it have separate soft touch button when power on the tanpura initial only we can hear a very very low click noise from speaker for friction of second there after no sound and wher powering off the same click sound come from speaker for friction of second so please guide on this problem for this model
Thanks and regards
Sunil Amin
7028474734

The solution to your problem is quite simple.
Open the lid of the tanpura and remove the variable resistor which works as volume and on/off button.
Connect DMM in Ohm mode, across any two adjacent terminals of variable resistor.
Now rotate the variable resistor, you will see that its resistance does not vary smoothly.
Check the value of the variable resistor at its back side.
Purchase new one and connect it inside the tanpura.

I had replied to your problem with solution. Please check above comments and share your experience.
Did it solve your problem?

Is your problem solved with my suggestions? Please share your experience!

I have already tried with a couple of Ragini Digital tanpura to break the filler material around the microcontroller circuit inside the Tanpura. I also tried it with two types of mild acids H2SO4 and HCl.
I did it as follows, but cannot guarantee that it will surely work.
1. First I disconnected the microcontroller circuit from the main board.
2. Then I dipped that block into dilute HCl for one night i.e. about 12 hours.
3. During next morning, I took it out, wiped with moist cloth.
4. Then using a ball pen hammer, I mildly hit the stone like block, it cracked and then slowly and patiently I was able to remove the cover.
5. But to my surprise, the microcontroller board is pre programmed.
6. And since we don’t have its program, I tried different combinations with my programming skill, but no luck.
So if you have patience enough, try it, else, leave it – this is my genuine and experienced suggestion.
Now a days, the such instruments are not repairable. They are use and throw type.

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