{"product_id":"5j-j2n05-011-projector-lamp","title":"5J.J2N05.011 bare projector lamp","description":"\u003cp\u003eThe SP840's lamp is sold here as a bare bulb, part number 5J.J2N05.011, rated for 300 watts and 2000 hours. You may also see it listed as 5J.J2N05.001; both refer to the same lamp, so either code confirms you're looking at the right part.\u003c\/p\u003e\u003cp\u003eSince this comes without a housing, it's worth fitting into a cage that's still in solid condition, so check the connector and reflector for damage first. If your SP840's lamp code reads either 5J.J2N05.011 or 5J.J2N05.001, this bare lamp is the correct match.\u003c\/p\u003e\u003ch3\u003eAt a glance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWattage\u003c\/strong\u003e — 300 W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated life\u003c\/strong\u003e — 2,000 hours\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e — Bare Projector Lamp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU\u003c\/strong\u003e — LA-08428\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility\u003c\/strong\u003e — 1 projector models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhy does this lamp have two different part numbers?\u003c\/strong\u003e\u003cbr\u003e5J.J2N05.011 and 5J.J2N05.001 refer to the same lamp for the SP840. The trailing digits sometimes vary between production batches without changing the specification, so either code confirms the right part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's the rated output of this lamp?\u003c\/strong\u003e\u003cbr\u003e300 watts, with a 2000-hour rating, the figures published for the SP840's lamp assembly, and those numbers hold regardless of which of the two listed codes appears on your old lamp.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I buy the bare lamp or the housed module for my SP840?\u003c\/strong\u003e\u003cbr\u003eIf your current housing isn't cracked or scorched, the bare lamp is the cheaper route since it reuses that housing. A damaged cage would be reason to look at a full module instead.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the SP840 need any other maintenance when the lamp is changed?\u003c\/strong\u003e\u003cbr\u003eIt's worth checking the projector's air filter at the same time, since a dirty filter shortens lamp life, though the filter itself isn't part of this listing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know when the SP840's lamp is nearing the end of its life?\u003c\/strong\u003e\u003cbr\u003eA dimmer picture, a warning light on the projector, or simply approaching the 2000-hour mark are the usual signals it's due for replacement, worth acting on before it fails outright.\u003c\/p\u003e","brand":"Lamps Authority","offers":[{"title":"Default Title","offer_id":48182625140972,"sku":"LA-08428","price":121.39,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/5535\/8700\/files\/28350-lg.png?v=1786959112","url":"https:\/\/www.lampsauthority.com\/products\/5j-j2n05-011-projector-lamp","provider":"Lamps Authority","version":"1.0","type":"link"}