- Question: Short battery life on MZ-R70
read your comments on the Sony MZ-R50 and it made me envy everyone who
currently has one.... I originally bought one in 1998, but it broke a
year later....it was quite durable, tho! It survived falls on brick
paths, hardwood floors, ceramic tile floors, and even a cement patio!
However, after the patio, it fell on a rug, which must have thrown off
the magnetic record head. The thing stopped recording properly. I did,
however, purchase a return warranty, so I went back to the store, only
to discover that they were not selling electronics anymore! I was
forced to ship it to Warrentech in Texas, who replaced my beloved R50
with an R70. It's small and the color is cool, but, umm....how do I
put this?, IT STINKS!!!!! It's loud, it has an incredibly short
battery life, the remote left me longing for my good ol' stick-type,
and so on......
A small remark regarding your MZ-R70. You may replace the original NIMH which has
capacity of 700mAH with one with capacity of 1300mAH. It will almost double the time of
usage. It is not expensive and can be found in many shops.
- Question: Aiwa AM-F65 won't read discs
Hi there, I have a problem with my Aiwa AM-F65 Minidisc player. The error
message is saying TOC read, then making a funny noise as if the disc is
getting stuck, then the message changes to CAUTION and then it cuts
out. Can you help? I have tried pressing the reset at the back but that
has not worked and I am at a loss. Tracey
"CAUTION" on Aiwa MD's means that the unit cannot read the disc. To solve the problem
try the following.
If this will not help you will have to take it to a repair shop. You may need to replace the
- Replace disc (I'm sure you did)
- Use a cleaning disc to clean the laser unit.
- With the door open look for objects that shouldn't be in the unit near the laser unit and the
motor, (hair, matches, loosen screws...). If you find such, remove them carefully.
- Question: Home replacement of Overwrite Head doesn't fix Sony MDS-302 record problem
Please excuse my intrusion.
I have just finished reading your responses/article on
Minidisc.org with respect to repairing MD
I hope you can help me clarify something and possibly
A little under 5 years ago I bought a Sony MDS-302
Minidisc Recorder from the UK (I was living there at
the time). The unit worked wonderfully - no
About 2 years later I had an accident with it, a disk
got locked in the mechanism, and upon getting it out the
"overwrite head" snapped.
I ordered a replacement part from Sony Service (UK)
and fitted the part myself - everything worked fine
I now live in Trinidad, W.I. and I brought the MDS-302
with me where it has been working fine for the past
year, however recently it stopped recording/updating
the TOC. Originally I thought there was a problem
with the disks themselves (TDK Color) as they worked
fine in my MZ-R3. However upon closer inspection I
noticed the "overwrite head" was bent, of course
upon trying to straighten it, it snapped, so I ordered
a replacement from Sony Service (UK).
The part I received was different in design - I was
relieved as this part seemed more sturdy, I noted on
the packaging that the part is for the MDS-S35 but am
assured the mech's in these decks are the same (?)
both by Sony (UK) and reviews from Minidisc.org
I fitted the part - but the problem persists, I
contacted Sony Service (UK) who told me the "overwrite
head" needs setting up with a scope, when I
explained that I had already replaced one of these
parts, I was told it was "just luck" that it had worked.
Can you help/advise on this?
Any help you can give would be greatly appreciated -
Hi MR. X,
Next time please state your name. I would like to know whom am I trying to help.
As for the recording head: Many components take part in the recording process. One of
them is the recording head. If it is broken or misplaced you cannot record. It is true that the
best way to calibrate and to fine tune it is by using an oscilloscope. On the other hand if the
mechanical parts to which the recording head were attached have not been bent nor suffered a change of
shape, then when you connect a new recording head it will record the first time you try it. It may
need some fine tuning but it will work for sure -- unless you have another problem in the
recording circuits. The recording head is driven by a 'bridge' of 4 transistors and the
transistors are driven by an IC. There is a relatively high voltage in this circuit. All those
components must be OK in order to record. In addition the laser output should be high
enough to perform the process.
- Question: Will a broken LCD leak liquid?
Having read your series on Minidisc.org, I thought I might add my problem to
the mix. My MZ-R91 recently developed a cracked LCD due to a slightly bent
lid (how, I don't know as I treat it with kid gloves, but hey, that's
life!). All I want to know is if there is a risk to the unit from the
leaking liquid, or whether the LCD is completely sealed off from the rest of
the unit. If not, can I take off the lid and remove it somehow?
I would have gotten it repaired, but Sony gave me an estimate for 50% more than
the unit cost me, so it wasn't worth the hassle. It still works, just the
main unit LCD is dead, so I plan to use it as a player.
The broken LCD can stay in the unit. Although it is called Liquid Crystal it doesn't behave like
liquid in the sense you are talking about.
I can sell you an LCD for your unit for USD120.-
- Question: Isolating a recording noise problem
Nice to read all your questions and answers for
Minidiscs. I am really impressed by your knowledge and
experience. I recently bought Sony MSD-JE330 and found a
problem using analog recording from CD to Minidisc.
The recorded Minidisc always has an annoying buzz noise
in the background when the music is quiet. I
changed the unit's location and used an expensive connection cable,
but still it did not help. I notice this noise is not coming
from the CD player, the connection between the CD player and the
MDS-JE330 is through a Yamaha R-V702 AV receiver. If I
switch to CD, I can hear no noise, but if switch to
Tape (include Minidisc), I can hear noise during
recording. I have even tried a direct connection between the CD player
and Minidisc deck but the noise still exists. The funny thing
is, sometimes there is no noise during recording, but most of the time
there is. I have sent it to a Sony Repair center, they
replaced major parts but did not get rid of that
noise. I read a message board and found that some others have
the same problem I have. If this is a product defect,
can it be repaired? If I use optical input, will it
help? I have never used it because my CD player does not have
First you have to know what is causing the noise. Is it the recording circuit or the playback
circuit? In order to make this test use a disc that was recorded on another MD unit, one that is not
making noises. If everything is now quiet, it means you have problems in the recording circuit.
If you still hear noise, try the earphone output. Is it quiet? If it is, connect your MD to your
amplifier using this headphone output (volume should be relatively low on the MD as it feeds a line input).
If in all cases you still hear noise I think you are in trouble. I don't know if it is a common problem
but anyway it won't help you if it is. If there are no noises in the experiment you made then
the problem is in the recording circuit. You must test it with an optical link. If it is not ok you
will have to live with your MD unit as a player only or try to get a replacement at the shop you bought it, if it is
still possible. If the recording made through the optical path is ok go to next step. Use an analog cable having
an isolating audio transformer in series. If the noise is coming from ground loops you may
improve the situation by using such a device.
To all members of Minidisc.org. The steps mentioned here are good for all MD's
having similar problems.
- Question: How to fix a broken MZ-R50 glass display cover?
I have an MZ-R50 and an MZ-E90, and I must admit I like the 50 much more. The E90 is too slow
and has bad shock protection. I've had my R50 for two years, and it has handled the knocks
very well. Except one. In my very packed bag one day it was pressed hard against a metal bike
lock. The unit worked strange for a while but fixed itself all of a sudden and now works perfectly.
The problem is that the display is cracked. It still displays fine, only the glass is cracked. Is there any
way to fix this without spending too much money?
If the LCD is broken you cannot repair it. You must replace it and it is expensive. If only the
transparent window covering the LCD is broken then you can remove the broken one and
replace it with a peace of plastic of the same size, glued very carefully (so as not to glue up the whole