"This might be because the vias are corroded/dirty?" - yes and ideally you should find where the problem is and fix with wire. Pressing the PCB...
Could be defective tape, it would be interesting to test it in another device being it a deck, walkman, boombox etc. and see if you can reproduce...
Given the radio works fine on both channels (assuming this based on info provided) and fact radio output is fed into the Dolby amp, we can...
Tape chewing is likely caused by some slight misalignment in your deck, don't see how the tape itself can cause chewing. Seen many situations...
DeckTech is a reputable belts seller. Buy confidently from them, belts will fit. Set I linked is for this exact model, not for a similar one. What...
Don't know the belt dimensions, but the belt set is available from DeckTech: https://www.ebay.com/itm/324026018026 You can measure the dimensions...
The flex cable doesn't need to be desoldered, entire board tilts after desoldering the 4 motor wires + battery wires + white wire coming from...
The DC-DC convertor on this unit only powers the Dolby circuits, everything else being powered by the main 3V rail. So even if that was to be...
Hello and welcome to the forum @Jairaj ! There are quite a few common problems with this walkman, hence why recommend checking post #8 here:...
Yes, the test signal at position 4 (400Hz, 200nWb/m ANSI) can be used for adjustments at levels mentioned in this tutorial. Alternatively, test...
It's more likely to have a dead earbud than a dead channel in my opinion. Fact right earbud starts cutting out close to max volume can be an...
Removing the brass pulley is the easiest part in my opinion. Heating it with a soldering iron will expand it enough so it will come off easily....
Depends on the skills you have in regard to repairing motors. It's doable, but requires one to pay careful attention since motor is very small....
Welcome to the forum, @944 Dream ! You seem to be a serious collector having some very nice walkmans like: National RQ-J9, Pioneer PK-R7AW,...
Vias are plated inside, so unless you have damaged the plating soldering on the back side is enough to give electrical connection to both sides....
There's no need to move the washers slightly, as the capstan/flywheel assembly has some up/down play. That play is enough to get some oil inside....
Reserved
This thread covers the repair of clutch on the AIWA Alpha-2 mechanism. This mechanism is found on the following units: HS-PX30/303, HS-PX50/505,...
My recommendation is to take things one at a time: 1. The playback level trimpots are set in a position where one cursor isn't making connection...
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