Hi Guys,
I have just finished working on my 'ugly duckling' Hitachi TRK-9140 today. After getting some good advice here, I pulled it apart and cleaned/lubed the pots and switches and after putting everything back together all was well. The FM,MW,SW selector switch was the main cause of an intermittent lower output left channel and no left channel on AM mode. After cleaning, both channels are now operating at the same level. The volume, balance, treble and bass controls are now scratchy free too.
The problem was that after reassembling everything, whilst enjoying a tune, I noticed that my over liberal use of cleaner had resulted in some excess fluid dripping slowly over my internal LED level display!!
Although I didn't really want to pull it down again, I bit the bullet and completely gutted the unit so I could get access to the led panel that is behind a plexi panel. After an hours cleaning etc, I reassembled everything and hit the power button - Oh no, nothing!! This was the stage where I really did regret bothering to clean the LED display! Then I realised I had forgetten to connect the power supply wires!
Pulled the back off again and reconnected the wires. Right, great, I will just throw in 10 D cells and hey presto......... nothing!! :annoyed: Now I'm really feeling like an idiot. Due to the extensive disassembly and reassembly process, I was convinced I had snapped off some irreplaceable part at some stage! I was getting really pissed at myself at this stage. :annoyed:
Just for interests sake, I checked the batteries and realised I'd inserted one cell the wrong way around!! With fingers crossed I flipped it around, replaced the battery cover and hit the power switch............... - SUCCESS!!
Very relieved over here!!!
Anyone with a similar 'smack the forehead' experience??
James....
Below is a pre-repair photo - notice the lower levels on the left LED display caused by the dirty AM,FM,SW selector switch.
I have just finished working on my 'ugly duckling' Hitachi TRK-9140 today. After getting some good advice here, I pulled it apart and cleaned/lubed the pots and switches and after putting everything back together all was well. The FM,MW,SW selector switch was the main cause of an intermittent lower output left channel and no left channel on AM mode. After cleaning, both channels are now operating at the same level. The volume, balance, treble and bass controls are now scratchy free too.

The problem was that after reassembling everything, whilst enjoying a tune, I noticed that my over liberal use of cleaner had resulted in some excess fluid dripping slowly over my internal LED level display!!


Pulled the back off again and reconnected the wires. Right, great, I will just throw in 10 D cells and hey presto......... nothing!! :annoyed: Now I'm really feeling like an idiot. Due to the extensive disassembly and reassembly process, I was convinced I had snapped off some irreplaceable part at some stage! I was getting really pissed at myself at this stage. :annoyed:
Just for interests sake, I checked the batteries and realised I'd inserted one cell the wrong way around!! With fingers crossed I flipped it around, replaced the battery cover and hit the power switch............... - SUCCESS!!
Very relieved over here!!!

Anyone with a similar 'smack the forehead' experience??
James....

Below is a pre-repair photo - notice the lower levels on the left LED display caused by the dirty AM,FM,SW selector switch.
