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Fix for Panasonic RQ-SX25

topgear07 - 2012-02-19 12:52

Hi Everyone

Just thought you'd like to hear the fun I've had fixing my RQ-SX25. It was playing ok, the capstan was pulling the tape through but the reels were not going round. I was left with a bunch of tape getting chewed up down by the head! A strip-down was needed. I wasn't looking forward to it much, you know how fiddly these modern Panasonic walkmans are. Sure enough, I had to de-solder the motor, solenoid and other terminals to separate the circuit board from the mechanics (the belts weren't too bad, but decided to replace anyway). That's when I saw this spring that wasn't attached to anything! Turns out, the black plastic ring holding the clutch mechanism together had split causing the reels to lose drive. A bit of super glue was all that was needed and it's working perfectly again.

 

SDC11992

Front of RQ-SX25

 

 

SDC11993

Complex minature parts

 

 

SDC11994

The offending black plastic cap (photo doesn't show the split very well)

 

 

SDC11996

Spring, clutch disc (felt clutch) and plastic cap

 

 

SDC11997

Solder points for motor

 

 

SDC11998

Solder points for tape detection / type, solenoid and battery -ve terminal

 

I've got a Sony WM-BF605 in bits - will let you know how that goes.

Bye for now

Matt

docp - 2012-02-19 22:24

Nice photos Matt!
Most members love Panasonics but dread the day they'll have to open them up on account of the 'complex miniature' design as Matt rightly said and the need to de solder and resolder even for a belt change...ouch

bub - 2012-02-20 01:40

My panasonics split at that plastic part too- a common problem on this mechanism.

chris.groves - 2012-03-04 05:16

Hi, where can I get a replacement battery for this machine....just dug it out of it's box to sell it and realised the original battery has been lost in the mists of time and moving houses....cheers

Chris

topgear07 - 2012-03-14 13:04

Hi Chris
Sorry for the delay in getting back to you (you've probably sold the walkman now). Anyway, the battery is Panasonic RP-BP62 1.2v 600mAh Ni-cad. However, the walkman does work with the Sony 1.2v gumstick cell just as well, and the capacity is greater, 900 or even 1400mAh (may need a Sony charger, as these are Ni-MH).