In today’s post, I look at replacing the battery in the Lexicon LXP series. Without a battery, the Lexicon fails to hold presets and you can experience other glitches. I bought a Lexicon with a leaky battery which had to come out quickly and one with a completely flat battery.
To begin, watch the Lexicon opening video found here:
and look for the battery n the board. It’s quite obvious when you see it. It’s like a computer battery, poking out vertically from the board.
For the LXP-5 series, mine all had glue gun glue around the holder and it was a pain to get off. I ended up soaking it in isopropyl alcohol (99%ish) and get it loose. I then carefully prized it away from the battery and board with a small, flat head screw driver.
Next up, I used a desoldering iron to remove the battery. I bought a cheap one from AliExpress for £5 and it is ridicously good at sucking out the solder when you get your technique right. I practiced on an old Saphhire Pro board with leaky caps (which I repaied) before attempting the Lexicon so at this stage, a breeze. I was surprised at how efficient this was.
You can see my nice clean holes and they really are clean! Almost like a fresh board.
I then matched up the correct holder by reading through the fantastic post from Theresa at the Lexicon User Group (link). Theresa recommended part PN: BH-76A-1 Mfr: Adam Tech and I make an order (along with some LXP caps) from DigiKey.
Looking at Theresa’s photo:
the negative if facing forward. This is where I have paused. They positive legs fit the negative and the negative hole fits the positive.
The reason I paused is because when I worked on the Sapphire board, the capacitors has a positive (plus symbol) for the positive leg and negative (minus) for the negative leg. I compared with other capacitors. Nice and easy. This on the other hand has a negative symbol and a negative symbol where the two legs go but a positive symbol on the front.
Therefore, it sounds like it goes in this way and I solder all joints. My question is – do I reverse the battery in the holder? or not?
Thanks again to Theresa, any useful bit of advice, the battery holder will need to be tilted so that when the case closes, it can fit in there nicely. It adds a little extra height.