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Boss DR 110 Replacement ICs
Old 3rd December 2019
Gear Head

Boss DR 110 Replacement ICs


I've come a long way and I'm working my way through fixing a DR 110 I picked up second hand and there appears to have been battery leakage or something else spilled on the unit, so I had to strip the components, clean with 99.9% alcohol and the board looks great, but my guess is the Op Amp (5218 DIP-8) and a 5101 (SIP-8) both likely have issues and I'm having issues finding replacements, more specifically the 5150.

For the 5218, when looking for a replacement I believe my main focus needs to be on finding something within the original min/max voltage (~2-~16 ... lower on the min end and higher on the max end are both fine correct) and again similar with the max rated voltage of 15V (see attached for datasheet).

The 5150 has me at a total loss ... it's SIP-8 and beyond that I'm totally unsure.

Can I please get some recommendations of each off or ?

See attached for the op amp and here for the other:

Attached Files
File Type: pdf 5218 datasheet.pdf (358.1 KB, 9 views)
Old 3rd December 2019
Gear Head

This is all I see for options for the 5150:
Old 3rd December 2019
Gear Head

Also, 2 channels for the op amp
Old 5th December 2019
You have that corp SIP VCA's listed, won't work. Fried dual opamps usually have high DC on the output pins 1 and 7. Check that first.

5218's are fet opamps similar to LF353. They are commonly found in Japanese effects boxes used as sample and hold amps. The other I don't know. If 8 pin DIP or SIP you can determine if it's a dual opamp by beeping with a continuity meter from the 5218 pin 8, the + power pin and pin 4 the - power pin. The BurrBrown OPA1642 dual fet opamp is usually a safe swap. Order some Brown Dog SIP to dual SOIC adaptors and install a SIP machine socket to test them.
Old 4 weeks ago
Gear Head

In my opinion, you should not repair this device. During the time you spend on repairing it, you will be able to earn money, which will be enough to buy three new and much more advanced devices.
BUT, if you want to repair this your device, you need to have its schematic and understand how it works. You need to check this device with an oscilloscope and identify the faulty components. Only then can you start looking for suitable replacements.
Regarding suitable replacements for aforementioned ICs (if you really need this). The M5218 is general purpose bipolar (not FET) dual operational amplifier. The datasheets you attached are correct. You may replace it with any general purpose bipolar dual operational amplifier in the DIP-8 package. For example, RC4558P. BTW, namely this component is original. The M51501L vintage power amplifier has not direct replacement. You can purchase it from ebay.
Good luck.
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