-how to factory reset for JVC RV-NB50 boombox? I went updating with an USB but didnt work out. Now my boombox worn't turn on? There is satnd-by light, but it doesn turn on.. Please help

Jim Oliver

• 23 Answers
• Posted on Nov 08, 2009

SOURCE: JVC boombox RV-NB 1 stopped working

Its the fuse (1.25A 250V slow blow) remove 12 allen screws on side panels, six each side (the very top and bottom allens are
for comestics) remove the woofer screws (just the two of the four)
that are facing the front panel.remove the 12 screws in the rear panel. 6 along the top, 4 along the bottom, 2 in the middle.
go to Radio Shack, Get a 2A 250V slow blow fuse (they dont have a 1.25A) Part# 270-1064 (4-pk about $3.00) reinstall & ROCK !!!!

SOURCE: Problem with the JVC RV-NB50Radio

Hi stigjdk,

Please unplug the unit for 10 minutes and confirm that the USB Flash Drive is formatted in FAT16 or FAT32 then repeat the update procedure.

1) Download the firmware here and save it to your PC Desktop.

2) Insert a USB Flash Drive into your PC and format in FAT16 or FAT32.

3) Unzip and open the Downloaded file. Copy and Paste the file "host.h16" to USB Drive folder.

4) Turn off the RV-NB50 and insert the USB Flash Drive in the USB port on the front of the RV-NB50.

5) While the unit is OFF, press [9], [1], [4] on the remote control.

6) RV-NB unit will turn on automatically, and "HELLO" and "MCU UPGR" will appear on the clock display.

7) While updating the software, the clock display will be blank. Please wait about 2 minutes and DO NOT TURN OFF (or pull out USB Flash Drive) during updating.

8) The clock display will appear when the update is
complete.

9) Gently remove the USB Flash Drive

10) Done

Hope it helps.

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