{"product_id":"allen-bradley-1756-pa75","title":"Allen-Bradley 1756-PA75","description":"\u003cstyle\u003e\n.flexa-desc { font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif; color:#1f2937; line-height:1.7; }\n.flexa-desc .desc-intro { font-size:15px; color:#374151; margin-bottom:0; }\n.flexa-desc .desc-section { margin-top:28px; }\n.flexa-desc .desc-section-title { font-size:15px; font-weight:700; color:#111827; text-transform:uppercase; letter-spacing:.05em; padding-bottom:10px; border-bottom:2px solid #e5e7eb; margin-bottom:16px; }\n.flexa-desc .desc-service-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:12px; }\n.flexa-desc .desc-service-card { border-radius:10px; padding:16px; border:1px solid #e5e7eb; }\n.flexa-desc .desc-service-repair { background:#fff7ed; border-color:#fed7aa; }\n.flexa-desc .desc-service-ref { background:#f0fdf4; border-color:#bbf7d0; }\n.flexa-desc .desc-service-new { background:#eff6ff; border-color:#bfdbfe; }\n.flexa-desc .desc-service-label { font-weight:700; font-size:13px; text-transform:uppercase; letter-spacing:.04em; margin-bottom:8px; }\n.flexa-desc .desc-service-repair .desc-service-label { color:#c2410c; }\n.flexa-desc .desc-service-ref .desc-service-label { color:#15803d; }\n.flexa-desc .desc-service-new .desc-service-label { color:#1d4ed8; }\n.flexa-desc .desc-service-body { font-size:13px; color:#4b5563; line-height:1.6; }\n.flexa-desc .desc-faq-item { margin-bottom:16px; padding:14px 16px; background:#f9fafb; border-radius:8px; border-left:3px solid #e5e7eb; }\n.flexa-desc .desc-faq-item:last-child { margin-bottom:0; }\n.flexa-desc .desc-faq-q { font-weight:700; font-size:14px; color:#111827; margin-bottom:6px; }\n.flexa-desc .desc-faq-a { font-size:13px; color:#4b5563; line-height:1.6; }\n.flexa-desc .desc-seo { margin-top:24px; padding:14px 16px; background:#f3f4f6; border-radius:8px; font-size:13px; color:#6b7280; line-height:1.6; }\n@media(max-width:640px){ .flexa-desc .desc-service-grid { grid-template-columns:1fr; } }\n\u003c\/style\u003e\n\u003cdiv class=\"flexa-desc\"\u003e\n  \u003cp class=\"desc-intro\"\u003eALLEN BRADLEY 1756-PA75 repair service is a critical need for facilities running ControlLogix chassis-based automation systems, and sourcing a quality 1756-PA75 refurbished unit or getting your existing module restored is often the fastest path back to production. The ALLEN BRADLEY 1756-PA75 is a 75-watt chassis-mount power supply module engineered to accept a universal AC input range of 86–265 VAC, making it adaptable to both domestic and international facility voltages without hardware changes. Delivering a regulated 5 VDC output at up to 13 amps, this open-style module powers the backplane of a ControlLogix chassis and supports multiple I\/O and communication modules simultaneously under heavy scan loads. For engineers performing 1756-PA75 troubleshooting, the onboard status LEDs provide immediate visual feedback on power-good state and fault conditions, narrowing down whether the issue is with the supply itself or a downstream module drawing excessive current. This unit is commonly deployed in continuous-process industries including oil and gas, water treatment, food and beverage packaging lines, and automotive assembly — environments where backplane power stability is non-negotiable. If your facility is searching for 1756-PA75 repair near me, Flexa Systems provides industrial VFD repair and power supply module restoration from our Lewisville, TX facility with nationwide shipping. Units exhibiting output voltage droop, LED fault indication, or complete power loss are strong candidates for depot-level repair rather than outright replacement, preserving both capital budget and system configuration continuity.\u003c\/p\u003e\n\u003cdiv class=\"desc-section\"\u003e\n  \u003cdiv class=\"desc-section-title\"\u003eTechnical Specifications\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;border-radius:8px;overflow:hidden;border:1px solid #e5e7eb;\"\u003e\n\u003ctr style=\"background:#f8f9fa;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;color:#374151;width:38%;font-size:13px;\"\u003ePart Number\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;color:#1f2937;font-size:13px;\"\u003e1756-PA75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;color:#374151;width:38%;font-size:13px;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;color:#1f2937;font-size:13px;\"\u003eALLEN BRADLEY\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f8f9fa;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;color:#374151;width:38%;font-size:13px;\"\u003eVoltage\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;color:#1f2937;font-size:13px;\"\u003e110 VAC 1 Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;color:#374151;width:38%;font-size:13px;\"\u003ePackage \/ Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;color:#1f2937;font-size:13px;\"\u003ePOWER SUPPLY MODULE\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"desc-section\"\u003e\n  \u003cdiv class=\"desc-section-title\"\u003eCompatibility\u003c\/div\u003e\n  \u003cp style=\"font-size:14px;color:#374151;margin:0;line-height:1.7;\"\u003eThe 1756-PA75 is compatible with the full Allen-Bradley ControlLogix 1756 chassis family, including the 1756-A4, 1756-A7, 1756-A10, and 1756-A13 backplane chassis configurations, supplying regulated 5 VDC power to co-resident modules such as the 1756-L71, 1756-L73, and 1756-EN2T EtherNet\/IP communication bridge. ALLEN BRADLEY 1756-PA75 integration is straightforward within Studio 5000 Logix Designer environments — the module is recognized automatically at chassis power-up and does not require explicit software configuration, which simplifies 1756-PA75 replacement for failed 1756-PA72 or 1756-PA16 units already present in the rack. The 1756-PA75 replacement for legacy 1756-PA72 power supplies is a direct mechanical and electrical swap, maintaining backplane connector compatibility and physical form factor. This module also coexists with redundant power supply configurations when paired with a 1756-PSCA2 chassis adapter, supporting high-availability architectures used alongside DeviceNet (1756-DNB) and ControlNet (1756-CN2) network modules.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"desc-section\"\u003e\n  \u003cdiv class=\"desc-section-title\"\u003eService Options\u003c\/div\u003e\n  \u003cdiv class=\"desc-service-grid\"\u003e\n    \u003cdiv class=\"desc-service-card desc-service-repair\"\u003e\n      \u003cdiv class=\"desc-service-label\"\u003eRepair Service\u003c\/div\u003e\n      \u003cdiv class=\"desc-service-body\"\u003eShip your faulty 1756-PA75 to our facility. Our certified technicians perform IGBT testing, capacitor inspection, gate driver diagnostics, and full load testing. Typical turnaround: 5–7 business days. 2-year warranty included.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"desc-service-card desc-service-ref\"\u003e\n      \u003cdiv class=\"desc-service-label\"\u003eRefurbished\u003c\/div\u003e\n      \u003cdiv class=\"desc-service-body\"\u003eIn-stock ALLEN BRADLEY 1756-PA75 variable frequency drive, reconditioned to OEM specifications and verified under load. Ships immediately. 2-year warranty included.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"desc-service-card desc-service-new\"\u003e\n      \u003cdiv class=\"desc-service-label\"\u003eBrand New\u003c\/div\u003e\n      \u003cdiv class=\"desc-service-body\"\u003eNew 1756-PA75 in original ALLEN BRADLEY packaging. Full manufacturer warranty applies. Contact us to confirm availability and lead time.\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"desc-section\"\u003e\n  \u003cdiv class=\"desc-section-title\"\u003eCommon Failure Modes\u003c\/div\u003e\n  \u003cul style=\"margin:0;padding-left:20px;line-height:1.7;\"\u003e\n\u003cli style=\"padding:5px 0;color:#374151;font-size:14px;\"\u003eOutput voltage collapse to \u0026lt;4.75 VDC under full backplane load due to failed bulk electrolytic capacitors on the primary filter stage — a confirmed pattern in 1756-PA75 units manufactured before 2018 with high cumulative runtime hours.\u003c\/li\u003e\n\u003cli style=\"padding:5px 0;color:#374151;font-size:14px;\"\u003e1756-PA75 fault condition where the POWER OK LED flashes amber intermittently, caused by a degraded PWM controller IC (typically a UC3842 or equivalent) losing regulation under thermal cycling in enclosures exceeding 55°C ambient.\u003c\/li\u003e\n\u003cli style=\"padding:5px 0;color:#374151;font-size:14px;\"\u003eInrush current limiting thermistor (NTC) failure causing repeated breaker trips or blown input fuses on power-up — a 1756-PA75 troubleshooting scenario that is frequently misdiagnosed as a wiring or breaker sizing issue when the root cause is an open NTC element.\u003c\/li\u003e\n\u003cli style=\"padding:5px 0;color:#374151;font-size:14px;\"\u003eComplete no-output condition with no LED activity following a facility voltage transient or lightning-adjacent surge event, typically resulting from a failed MOV on the AC input stage and a sacrificed bridge rectifier diode — components that are directly replaceable at the board level during depot repair.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"desc-section\"\u003e\n  \u003cdiv class=\"desc-section-title\"\u003eFrequently Asked Questions\u003c\/div\u003e\n  \u003cdiv class=\"desc-faq-item\"\u003e\n\u003cdiv class=\"desc-faq-q\"\u003eIs the 1756-PA75 compatible with other ControlLogix power supplies, and can it replace older Allen-Bradley models?\u003c\/div\u003e\n\u003cdiv class=\"desc-faq-a\"\u003eThe 1756-PA75 compatible with the 1756-A4 through 1756-A17 chassis backplane connector standard makes it a direct mechanical and electrical replacement for the 1756-PA72 and the earlier 1756-PA16, both of which share the same chassis slot footprint and output pin configuration. The 1756-PA75 replacement for a 1756-PA72 requires no firmware update or software re-configuration in Studio 5000 — the chassis simply recognizes the new supply at startup. It is not cross-compatible with the 1756-PB72 or 1756-PB75 DC-input variants, as those accept 18–32 VDC input rather than AC. Engineers migrating from older SLC 500 or PLC-5 backplane power supplies should note that those form factors are entirely different and require a full chassis migration rather than a direct swap.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"desc-faq-item\"\u003e\n\u003cdiv class=\"desc-faq-q\"\u003eHow do I know whether my 1756-PA75 is worth repairing or should be replaced outright?\u003c\/div\u003e\n\u003cdiv class=\"desc-faq-a\"\u003e1756-PA75 repair is technically viable in the majority of field failures — the module uses discrete, serviceable components including rectifier bridges, filter capacitors, PWM controller ICs, and MOVs, all of which can be replaced at the board level during a proper depot inspection. The ALLEN BRADLEY 1756-PA75 is generally not worth repairing if the primary transformer shows signs of thermal overload (discoloration, cracked bobbin, or measured insulation resistance below 1 MΩ), or if the PCB substrate has visible delamination or carbonized traces from a sustained fault event. Units with intermittent output, LED fault codes, or voltage droop under load are almost always cost-effective to repair, typically at a fraction of the list price of a new module. Sending the unit in for free diagnostics — as offered by Flexa Systems — is the fastest way to get a definitive repair vs. replace assessment before committing budget.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"desc-faq-item\"\u003e\n\u003cdiv class=\"desc-faq-q\"\u003eWhere can I get 1756-PA75 repair service with a warranty?\u003c\/div\u003e\n\u003cdiv class=\"desc-faq-a\"\u003eFlexa Systems, based in Lewisville, TX, provides depot-level 1756-PA75 repair service with a 2-year warranty on all repaired and refurbished units, covering both parts and labor against the same failure mode. Standard turnaround is 5–7 business days from receipt of the unit, with expedited options available for critical production situations. We ship nationwide, so facilities across the US can access the same repair quality regardless of location — if you need to buy 1756-PA75 USA stock as an exchange unit while yours is in repair, we maintain an inventory of tested 1756-PA75 for sale and ready to ship. Contact Flexa Systems directly to initiate a repair order, request free diagnostics, or discuss exchange pricing on a certified refurbished replacement module.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"desc-faq-item\"\u003e\n\u003cdiv class=\"desc-faq-q\"\u003eWhere can I get 1756-PA75 repair service with a warranty?\u003c\/div\u003e\n\u003cdiv class=\"desc-faq-a\"\u003eFlexa Systems provides professional 1756-PA75 repair service from our facility in Lewisville, TX, serving customers nationwide. Standard turnaround is 5–7 business days from receipt and all repaired units ship with a 2-year warranty. Rush service (2–3 business days) is also available.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n  \u003cdiv class=\"desc-seo\"\u003eFlexa Systems specializes in ALLEN BRADLEY 1756-PA75 variable frequency drive repair, supplying refurbished and new units backed by a 2-year warranty. All drives are load-tested before shipping. Serving industrial facilities nationwide from Lewisville, TX.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"Repair Service","offer_id":54247707672851,"sku":"2100000013166","price":390.0,"currency_code":"USD","in_stock":true},{"title":"Refurbished","offer_id":54247707705619,"sku":"2100000013166","price":470.0,"currency_code":"USD","in_stock":true},{"title":"Brand New","offer_id":54247707738387,"sku":"2100000013166","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/1948\/5715\/files\/ae4a5122be4243d194a8584661604fdc_default.jpg?v=1780819715","url":"https:\/\/flexa-systems.com\/products\/allen-bradley-1756-pa75","provider":"Flexa Systems","version":"1.0","type":"link"}